Merge branch 'administrative-area-import' into next

api/migrations/versions/a049e5eb24dd_create_table_region.py

@@ -0,0 +1,35 @@
+"""create table region
+
+Revision ID: a049e5eb24dd
+Revises: a9627f63fbed
+Create Date: 2022-04-02 21:28:43.124521
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+from migrations.utils import dbtype
+
+
+# revision identifiers, used by Alembic.
+revision = "a049e5eb24dd"
+down_revision = "a9627f63fbed"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        "region",
+        sa.Column(
+            "relation_id", sa.BIGINT, autoincrement=True, primary_key=True, index=True
+        ),
+        sa.Column("name", sa.String),
+        sa.Column("geometry", dbtype("GEOMETRY"), index=True),
+        sa.Column("admin_level", sa.Integer, index=True),
+        sa.Column("tags", dbtype("HSTORE")),
+    )
+
+
+def downgrade():
+    op.drop_table("region")

api/obs/api/db.py

@@ -432,6 +432,16 @@ class Comment(Base):
         }
 
 
+class Region(Base):
+    __tablename__ = "region"
+
+    relation_id = Column(BIGINT, primary_key=True, index=True)
+    name = Column(String)
+    geometry = Column(Geometry)
+    admin_level = Column(Integer)
+    tags = Column(HSTORE)
+
+
 Comment.author = relationship("User", back_populates="authored_comments")
 User.authored_comments = relationship(
     "Comment",

api/obs/api/routes/frontend.py

@@ -26,7 +26,7 @@ if app.config.FRONTEND_CONFIG:
                         .replace("111", "{x}")
                         .replace("222", "{y}")
                     ],
-                    "minzoom": 12,
+                    "minzoom": 0,
                     "maxzoom": 14,
                 }
             ),

api/obs/api/routes/stats.py

@@ -4,12 +4,12 @@ from typing import Optional
 from operator import and_
 from functools import reduce
 
-from sqlalchemy import select, func
+from sqlalchemy import select, func, desc
 
 from sanic.response import json
 
 from obs.api.app import api
-from obs.api.db import Track, OvertakingEvent, User
+from obs.api.db import Track, OvertakingEvent, User, Region
 from obs.api.utils import round_to
 
 
@@ -167,3 +167,36 @@ async def stats(req):
 #     });
 #   }),
 # );
+
+
+@api.route("/stats/regions")
+async def stats(req):
+    query = (
+        select(
+            [
+                Region.relation_id.label("id"),
+                Region.name,
+                func.count(OvertakingEvent.id).label("overtaking_event_count"),
+            ]
+        )
+        .select_from(Region)
+        .join(
+            OvertakingEvent,
+            func.ST_Within(
+                func.ST_Transform(OvertakingEvent.geometry, 3857), Region.geometry
+            ),
+        )
+        .where(Region.admin_level == 6)
+        .group_by(
+            Region.relation_id,
+            Region.name,
+            Region.relation_id,
+            Region.admin_level,
+            Region.geometry,
+        )
+        .having(func.count(OvertakingEvent.id) > 0)
+        .order_by(desc("overtaking_event_count"))
+    )
+
+    regions = list(map(dict, (await req.ctx.db.execute(query)).all()))
+    return json(regions)

frontend/config.example.json

@@ -12,7 +12,7 @@
   "obsMapSource": {
     "type": "vector",
     "tiles": ["https://portal.example.com/tiles/{z}/{x}/{y}.pbf"],
-    "minzoom": 12,
+    "minzoom": 0,
     "maxzoom": 14
   }
 }

frontend/src/components/ColorMapLegend.tsx

@@ -59,7 +59,7 @@ export function DiscreteColorMapLegend({map}: {map: ColorMap}) {
   )
 }
 
-export default function ColorMapLegend({map, twoTicks = false}: {map: ColorMap, twoTicks?: boolean}) {
+export default function ColorMapLegend({map, twoTicks = false, digits=2}: {map: ColorMap, twoTicks?: boolean, digits?: number}) {
   const min = map[0][0]
   const max = map[map.length - 1][0]
   const normalizeValue = (v) => (v - min) / (max - min)
@@ -81,7 +81,7 @@ export default function ColorMapLegend({map, twoTicks = false}: {map: ColorMap,
       </svg>
       {tickValues.map(([value]) => (
         <span className={styles.tick} key={value} style={{left: normalizeValue(value) * 100 + '%'}}>
-          {value.toFixed(2)}
+          {value.toFixed(digits)}
         </span>
       ))}
     </div>

frontend/src/components/Map/index.tsx

@@ -1,75 +1,70 @@
-import React, { useState, useCallback, useMemo, useEffect } from "react";
+import React, {useState, useCallback, useMemo, useEffect} from 'react'
-import classnames from "classnames";
+import classnames from 'classnames'
-import { connect } from "react-redux";
+import {connect} from 'react-redux'
-import _ from "lodash";
+import _ from 'lodash'
-import ReactMapGl, {
+import ReactMapGl, {WebMercatorViewport, ScaleControl, NavigationControl, AttributionControl} from 'react-map-gl'
-  WebMercatorViewport,
+import turfBbox from '@turf/bbox'
-  ScaleControl,
+import {useHistory, useLocation} from 'react-router-dom'
-  NavigationControl,
-  AttributionControl,
-} from "react-map-gl";
-import turfBbox from "@turf/bbox";
-import { useHistory, useLocation } from "react-router-dom";
 
-import { useConfig } from "config";
+import {useConfig} from 'config'
 
-import { useCallbackRef } from "../../utils";
+import {useCallbackRef} from '../../utils'
-import { baseMapStyles } from "../../mapstyles";
+import {baseMapStyles} from '../../mapstyles'
 
-import styles from "./styles.module.less";
+import styles from './styles.module.less'
 
 interface Viewport {
-  longitude: number;
+  longitude: number
-  latitude: number;
+  latitude: number
-  zoom: number;
+  zoom: number
 }
-const EMPTY_VIEWPORT: Viewport = { longitude: 0, latitude: 0, zoom: 0 };
+const EMPTY_VIEWPORT: Viewport = {longitude: 0, latitude: 0, zoom: 0}
 
 export const withBaseMapStyle = connect((state) => ({
-  baseMapStyle: state.mapConfig?.baseMap?.style ?? "positron",
+  baseMapStyle: state.mapConfig?.baseMap?.style ?? 'positron',
-}));
+}))
 
 function parseHash(v: string): Viewport | null {
-  if (!v) return null;
+  if (!v) return null
-  const m = v.match(/^#([0-9\.]+)\/([0-9\.\-]+)\/([0-9\.\-]+)$/);
+  const m = v.match(/^#([0-9\.]+)\/([0-9\.\-]+)\/([0-9\.\-]+)$/)
-  if (!m) return null;
+  if (!m) return null
   return {
     zoom: Number.parseFloat(m[1]),
     latitude: Number.parseFloat(m[2]),
     longitude: Number.parseFloat(m[3]),
-  };
+  }
 }
 
 function buildHash(v: Viewport): string {
-  return `${v.zoom.toFixed(2)}/${v.latitude}/${v.longitude}`;
+  return `${v.zoom.toFixed(2)}/${v.latitude}/${v.longitude}`
 }
 
 const setViewportToHash = _.debounce((history, viewport) => {
   history.replace({
     hash: buildHash(viewport),
-  });
+  })
-}, 200);
+}, 200)
 
 function useViewportFromUrl(): [Viewport | null, (v: Viewport) => void] {
-  const history = useHistory();
+  const history = useHistory()
-  const location = useLocation();
+  const location = useLocation()
 
-  const [cachedValue, setCachedValue] = useState(parseHash(location.hash));
+  const [cachedValue, setCachedValue] = useState(parseHash(location.hash))
 
   // when the location hash changes, set the new value to the cache
   useEffect(() => {
-    setCachedValue(parseHash(location.hash));
+    setCachedValue(parseHash(location.hash))
-  }, [location.hash]);
+  }, [location.hash])
 
   const setter = useCallback(
     (v) => {
-      setCachedValue(v);
+      setCachedValue(v)
-      setViewportToHash(history, v);
+      setViewportToHash(history, v)
     },
     [history]
-  );
+  )
 
-  return [cachedValue || EMPTY_VIEWPORT, setter];
+  return [cachedValue || EMPTY_VIEWPORT, setter]
 }
 
 function Map({
@@ -78,57 +73,54 @@ function Map({
   boundsFromJson,
   baseMapStyle,
   hasToolbar,
+  onViewportChange,
   ...props
 }: {
-  viewportFromUrl?: boolean;
+  viewportFromUrl?: boolean
-  children: React.ReactNode;
+  children: React.ReactNode
-  boundsFromJson: GeoJSON.Geometry;
+  boundsFromJson: GeoJSON.Geometry
-  baseMapStyle: string;
+  baseMapStyle: string
-  hasToolbar?: boolean;
+  hasToolbar?: boolean
+  onViewportChange: (viewport: Viewport) => void
 }) {
-  const [viewportState, setViewportState] = useState(EMPTY_VIEWPORT);
+  const [viewportState, setViewportState] = useState(EMPTY_VIEWPORT)
-  const [viewportUrl, setViewportUrl] = useViewportFromUrl();
+  const [viewportUrl, setViewportUrl] = useViewportFromUrl()
 
-  const [viewport, setViewport] = viewportFromUrl
+  const [viewport, setViewport_] = viewportFromUrl ? [viewportUrl, setViewportUrl] : [viewportState, setViewportState]
-    ? [viewportUrl, setViewportUrl]
+  const setViewport = useCallback(
-    : [viewportState, setViewportState];
+    (viewport: Viewport) => {
+      setViewport_(viewport)
+      onViewportChange?.(viewport)
+    },
+    [setViewport_, onViewportChange]
+  )
 
-  const config = useConfig();
+  const config = useConfig()
   useEffect(() => {
-    if (
+    if (config?.mapHome && viewport?.latitude === 0 && viewport?.longitude === 0 && !boundsFromJson) {
-      config?.mapHome &&
+      setViewport(config.mapHome)
-      viewport?.latitude === 0 &&
-      viewport?.longitude === 0 &&
-      !boundsFromJson
-    ) {
-      setViewport(config.mapHome);
     }
-  }, [config, boundsFromJson]);
+  }, [config, boundsFromJson])
 
   const mapSourceHosts = useMemo(
-    () =>
+    () => _.uniq(config?.obsMapSource?.tiles?.map((tileUrl: string) => new URL(tileUrl).host) ?? []),
-      _.uniq(
-        config?.obsMapSource?.tiles?.map(
-          (tileUrl: string) => new URL(tileUrl).host
-        ) ?? []
-      ),
     [config?.obsMapSource]
-  );
+  )
 
   const transformRequest = useCallbackRef((url, resourceType) => {
-    if (resourceType === "Tile" && mapSourceHosts.includes(new URL(url).host)) {
+    if (resourceType === 'Tile' && mapSourceHosts.includes(new URL(url).host)) {
       return {
         url,
-        credentials: "include",
+        credentials: 'include',
-      };
+      }
     }
-  });
+  })
 
   useEffect(() => {
     if (boundsFromJson) {
-      const bbox = turfBbox(boundsFromJson);
+      const bbox = turfBbox(boundsFromJson)
       if (bbox.every((v) => Math.abs(v) !== Infinity)) {
-        const [minX, minY, maxX, maxY] = bbox;
+        const [minX, minY, maxX, maxY] = bbox
         const vp = new WebMercatorViewport({
           width: 1000,
           height: 800,
@@ -141,11 +133,11 @@ function Map({
             padding: 20,
             offset: [0, -100],
           }
-        );
+        )
-        setViewport(_.pick(vp, ["zoom", "latitude", "longitude"]));
+        setViewport(_.pick(vp, ['zoom', 'latitude', 'longitude']))
       }
     }
-  }, [boundsFromJson]);
+  }, [boundsFromJson])
 
   return (
     <ReactMapGl
@@ -153,23 +145,19 @@ function Map({
       width="100%"
       height="100%"
       onViewportChange={setViewport}
-      {...{ transformRequest }}
+      {...{transformRequest}}
       {...viewport}
       {...props}
       className={classnames(styles.map, props.className)}
       attributionControl={false}
     >
-      <AttributionControl style={{ top: 0, right: 0 }} />
+      <AttributionControl style={{top: 0, right: 0}} />
-      <NavigationControl style={{ left: 16, top: hasToolbar ? 64 : 16 }} />
+      <NavigationControl style={{left: 16, top: hasToolbar ? 64 : 16}} />
-      <ScaleControl
+      <ScaleControl maxWidth={200} unit="metric" style={{left: 16, bottom: 16}} />
-        maxWidth={200}
-        unit="metric"
-        style={{ left: 16, bottom: 16 }}
-      />
 
       {children}
     </ReactMapGl>
-  );
+  )
 }
 
-export default withBaseMapStyle(Map);
+export default withBaseMapStyle(Map)

frontend/src/components/RegionStats/index.tsx

@@ -0,0 +1,83 @@
+import React, { useState, useCallback } from "react";
+import { pickBy } from "lodash";
+import {
+  Loader,
+  Statistic,
+  Pagination,
+  Segment,
+  Header,
+  Menu,
+  Table,
+  Icon,
+} from "semantic-ui-react";
+import { useObservable } from "rxjs-hooks";
+import { of, from, concat, combineLatest } from "rxjs";
+import { map, switchMap, distinctUntilChanged } from "rxjs/operators";
+import { Duration, DateTime } from "luxon";
+
+import api from "api";
+
+function formatDuration(seconds) {
+  return (
+    Duration.fromMillis((seconds ?? 0) * 1000)
+      .as("hours")
+      .toFixed(1) + " h"
+  );
+}
+
+export default function Stats() {
+  const [page, setPage] = useState(1);
+  const PER_PAGE = 10;
+  const stats = useObservable(
+    () =>
+      of(null).pipe(
+        switchMap(() => concat(of(null), from(api.get("/stats/regions"))))
+      ),
+    null
+  );
+
+  const pageCount = stats ? Math.ceil(stats.length / PER_PAGE) : 1;
+
+  return (
+    <>
+      <Header as="h2">Top Regions</Header>
+
+      <div>
+        <Loader active={stats == null} />
+
+        <Table celled>
+          <Table.Header>
+            <Table.Row>
+              <Table.HeaderCell>Region name</Table.HeaderCell>
+              <Table.HeaderCell>Event count</Table.HeaderCell>
+            </Table.Row>
+          </Table.Header>
+
+          <Table.Body>
+            {stats
+              ?.slice((page - 1) * PER_PAGE, page * PER_PAGE)
+              ?.map((area) => (
+                <Table.Row key={area.id}>
+                  <Table.Cell>{area.name}</Table.Cell>
+                  <Table.Cell>{area.overtaking_event_count}</Table.Cell>
+                </Table.Row>
+              ))}
+          </Table.Body>
+
+    {pageCount > 1 && <Table.Footer>
+            <Table.Row>
+              <Table.HeaderCell colSpan="2">
+                <Pagination
+                  floated="right"
+                  activePage={page}
+                  totalPages={pageCount}
+                  onPageChange={(e, data) => setPage(data.activePage as number)}
+                />
+              </Table.HeaderCell>
+            </Table.Row>
+          </Table.Footer>}
+        </Table>
+      </div>
+    </>
+  );
+}

frontend/src/components/index.js

@@ -1,4 +1,5 @@
 export {default as Avatar} from './Avatar'
+export {default as Chart} from './Chart'
 export {default as ColorMapLegend, DiscreteColorMapLegend} from './ColorMapLegend'
 export {default as FileDrop} from './FileDrop'
 export {default as FileUploadField} from './FileUploadField'
@@ -6,7 +7,7 @@ export {default as FormattedDate} from './FormattedDate'
 export {default as LoginButton} from './LoginButton'
 export {default as Map} from './Map'
 export {default as Page} from './Page'
+export {default as RegionStats} from './RegionStats'
 export {default as Stats} from './Stats'
 export {default as StripMarkdown} from './StripMarkdown'
-export {default as Chart} from './Chart'
 export {default as Visibility} from './Visibility'

frontend/src/mapstyles/index.js

@@ -124,6 +124,60 @@ export const trackLayer = {
   },
 }
 
+export const getRegionLayers = (adminLevel = 6, baseColor = "#00897B", maxValue = 5000) => [{
+  id: 'region',
+  "type": "fill",
+  "source": "obs",
+  "source-layer": "obs_regions",
+  "minzoom": 0,
+  "maxzoom": 10,
+  "filter": [
+    "all",
+    ["==", "admin_level", adminLevel],
+    [">", "overtaking_event_count", 0],
+  ],
+  "paint": {
+    "fill-color": baseColor,
+    "fill-antialias": true,
+    "fill-opacity": [
+      "interpolate",
+      ["linear"],
+      [
+        "log10",
+        [
+          "get",
+          "overtaking_event_count"
+        ]
+      ],
+      0,
+      0,
+      Math.log10(maxValue),
+      0.9
+    ]
+  },
+},
+{
+  id: 'region-border',
+  "type": "line",
+  "source": "obs",
+  "source-layer": "obs_regions",
+  "minzoom": 0,
+  "maxzoom": 10,
+  "filter": [
+    "all",
+    ["==", "admin_level", adminLevel],
+    [">", "overtaking_event_count", 0],
+  ],
+  "paint": {
+    "line-width": 1,
+    "line-color": baseColor,
+  },
+  "layout": {
+    "line-join": "round",
+    "line-cap": "round"
+  }
+}]
+
 export const trackLayerRaw = produce(trackLayer, draft => {
   // draft.paint['line-color'] = '#81D4FA'
   draft.paint['line-width'][4] = 1

frontend/src/pages/HomePage.tsx

@@ -6,7 +6,7 @@ import {map, switchMap} from 'rxjs/operators'
 import {useTranslation} from 'react-i18next'
 
 import api from 'api'
-import {Stats, Page} from 'components'
+import {RegionStats, Stats, Page} from 'components'
 import type {Track} from 'types'
 
 import {TrackListItem, NoPublicTracksMessage} from './TracksPage'
@@ -46,9 +46,10 @@ export default function HomePage() {
         <Grid.Row>
           <Grid.Column width={8}>
             <Stats />
+            <MostRecentTrack />
           </Grid.Column>
           <Grid.Column width={8}>
-            <MostRecentTrack />
+            <RegionStats />
           </Grid.Column>
         </Grid.Row>
       </Grid>

frontend/src/pages/MapPage/LayerSidebar.tsx

@@ -1,69 +1,56 @@
-import React from "react";
+import React from 'react'
-import _ from "lodash";
+import _ from 'lodash'
-import { connect } from "react-redux";
+import {connect} from 'react-redux'
-import {
+import {List, Select, Input, Divider, Label, Checkbox, Header} from 'semantic-ui-react'
-  List,
+import {useTranslation} from 'react-i18next'
-  Select,
-  Input,
-  Divider,
-  Label,
-  Checkbox,
-  Header,
-} from "semantic-ui-react";
-import { useTranslation } from "react-i18next";
 
 import {
   MapConfig,
   setMapConfigFlag as setMapConfigFlagAction,
   initialState as defaultMapConfig,
-} from "reducers/mapConfig";
+} from 'reducers/mapConfig'
-import { colorByDistance, colorByCount, viridisSimpleHtml } from "mapstyles";
+import {colorByDistance, colorByCount, viridisSimpleHtml} from 'mapstyles'
-import { ColorMapLegend, DiscreteColorMapLegend } from "components";
+import {ColorMapLegend, DiscreteColorMapLegend} from 'components'
 
-const BASEMAP_STYLE_OPTIONS = ["positron", "bright"];
+const BASEMAP_STYLE_OPTIONS = ['positron', 'bright']
 
 const ROAD_ATTRIBUTE_OPTIONS = [
-  "distance_overtaker_mean",
+  'distance_overtaker_mean',
-  "distance_overtaker_min",
+  'distance_overtaker_min',
-  "distance_overtaker_max",
+  'distance_overtaker_max',
-  "distance_overtaker_median",
+  'distance_overtaker_median',
-  "overtaking_event_count",
+  'overtaking_event_count',
-  "usage_count",
+  'usage_count',
-  "zone",
+  'zone',
-];
+]
 
-const DATE_FILTER_MODES = ["none", "range", "threshold"];
+const DATE_FILTER_MODES = ['none', 'range', 'threshold']
 
-type User = Object;
+type User = Object
 
 function LayerSidebar({
   mapConfig,
   login,
   setMapConfigFlag,
 }: {
-  login: User | null;
+  login: User | null
-  mapConfig: MapConfig;
+  mapConfig: MapConfig
-  setMapConfigFlag: (flag: string, value: unknown) => void;
+  setMapConfigFlag: (flag: string, value: unknown) => void
 }) {
-  const { t } = useTranslation();
+  const {t} = useTranslation()
   const {
-    baseMap: { style },
+    baseMap: {style},
-    obsRoads: { show: showRoads, showUntagged, attribute, maxCount },
+    obsRoads: {show: showRoads, showUntagged, attribute, maxCount},
-    obsEvents: { show: showEvents },
+    obsEvents: {show: showEvents},
-    filters: {
+    obsRegions: {show: showRegions},
-      currentUser: filtersCurrentUser,
+    filters: {currentUser: filtersCurrentUser, dateMode, startDate, endDate, thresholdAfter},
-      dateMode,
+  } = mapConfig
-      startDate,
-      endDate,
-      thresholdAfter,
-    },
-  } = mapConfig;
 
   return (
     <div>
       <List relaxed>
         <List.Item>
-          <List.Header>{t("MapPage.sidebar.baseMap.style.label")}</List.Header>
+          <List.Header>{t('MapPage.sidebar.baseMap.style.label')}</List.Header>
           <Select
             options={BASEMAP_STYLE_OPTIONS.map((value) => ({
               value,
@@ -71,23 +58,50 @@ function LayerSidebar({
               text: t(`MapPage.sidebar.baseMap.style.${value}`),
             }))}
             value={style}
-            onChange={(_e, { value }) =>
+            onChange={(_e, {value}) => setMapConfigFlag('baseMap.style', value)}
-              setMapConfigFlag("baseMap.style", value)
-            }
           />
         </List.Item>
         <Divider />
+        <List.Item>
+          <Checkbox
+            toggle
+            size="small"
+            id="obsRegions.show"
+            style={{float: 'right'}}
+            checked={showRegions}
+            onChange={() => setMapConfigFlag('obsRegions.show', !showRegions)}
+          />
+          <label htmlFor="obsRegions.show">
+            <Header as="h4">Regions</Header>
+          </label>
+        </List.Item>
+        {showRegions && (
+          <>
+            <List.Item>Color regions based on event count</List.Item>
+            <List.Item>
+              <ColorMapLegend
+                twoTicks
+                map={[
+                  [0, '#00897B00'],
+                  [5000, '#00897BFF'],
+                ]}
+                digits={0}
+              />
+            </List.Item>
+          </>
+        )}
+        <Divider />
         <List.Item>
           <Checkbox
             toggle
             size="small"
             id="obsRoads.show"
-            style={{ float: "right" }}
+            style={{float: 'right'}}
             checked={showRoads}
-            onChange={() => setMapConfigFlag("obsRoads.show", !showRoads)}
+            onChange={() => setMapConfigFlag('obsRoads.show', !showRoads)}
           />
           <label htmlFor="obsRoads.show">
-            <Header as="h4">{t("MapPage.sidebar.obsRoads.title")}</Header>
+            <Header as="h4">{t('MapPage.sidebar.obsRoads.title')}</Header>
           </label>
         </List.Item>
         {showRoads && (
@@ -95,16 +109,12 @@ function LayerSidebar({
             <List.Item>
               <Checkbox
                 checked={showUntagged}
-                onChange={() =>
+                onChange={() => setMapConfigFlag('obsRoads.showUntagged', !showUntagged)}
-                  setMapConfigFlag("obsRoads.showUntagged", !showUntagged)
+                label={t('MapPage.sidebar.obsRoads.showUntagged.label')}
-                }
-                label={t("MapPage.sidebar.obsRoads.showUntagged.label")}
               />
             </List.Item>
             <List.Item>
-              <List.Header>
+              <List.Header>{t('MapPage.sidebar.obsRoads.attribute.label')}</List.Header>
-                {t("MapPage.sidebar.obsRoads.attribute.label")}
-              </List.Header>
               <Select
                 fluid
                 options={ROAD_ATTRIBUTE_OPTIONS.map((value) => ({
@@ -113,74 +123,50 @@ function LayerSidebar({
                   text: t(`MapPage.sidebar.obsRoads.attribute.${value}`),
                 }))}
                 value={attribute}
-                onChange={(_e, { value }) =>
+                onChange={(_e, {value}) => setMapConfigFlag('obsRoads.attribute', value)}
-                  setMapConfigFlag("obsRoads.attribute", value)
-                }
               />
             </List.Item>
-            {attribute.endsWith("_count") ? (
+            {attribute.endsWith('_count') ? (
               <>
                 <List.Item>
-                  <List.Header>
+                  <List.Header>{t('MapPage.sidebar.obsRoads.maxCount.label')}</List.Header>
-                    {t("MapPage.sidebar.obsRoads.maxCount.label")}
-                  </List.Header>
                   <Input
                     fluid
                     type="number"
                     value={maxCount}
-                    onChange={(_e, { value }) =>
+                    onChange={(_e, {value}) => setMapConfigFlag('obsRoads.maxCount', value)}
-                      setMapConfigFlag("obsRoads.maxCount", value)
-                    }
                   />
                 </List.Item>
                 <List.Item>
                   <ColorMapLegend
                     map={_.chunk(
-                      colorByCount(
+                      colorByCount('obsRoads.maxCount', mapConfig.obsRoads.maxCount, viridisSimpleHtml).slice(3),
-                        "obsRoads.maxCount",
-                        mapConfig.obsRoads.maxCount,
-                        viridisSimpleHtml
-                      ).slice(3),
                       2
                     )}
                     twoTicks
                   />
                 </List.Item>
               </>
-            ) : attribute.endsWith("zone") ? (
+            ) : attribute.endsWith('zone') ? (
               <>
                 <List.Item>
-                  <Label
+                  <Label size="small" style={{background: 'blue', color: 'white'}}>
-                    size="small"
+                    {t('general.zone.urban')} (1.5&nbsp;m)
-                    style={{ background: "blue", color: "white" }}
-                  >
-                    {t("general.zone.urban")} (1.5&nbsp;m)
                   </Label>
-                  <Label
+                  <Label size="small" style={{background: 'cyan', color: 'black'}}>
-                    size="small"
+                    {t('general.zone.rural')}(2&nbsp;m)
-                    style={{ background: "cyan", color: "black" }}
-                  >
-                    {t("general.zone.rural")}(2&nbsp;m)
                   </Label>
                 </List.Item>
               </>
             ) : (
               <>
                 <List.Item>
-                  <List.Header>
+                  <List.Header>{_.upperFirst(t('general.zone.urban'))}</List.Header>
-                    {_.upperFirst(t("general.zone.urban"))}
+                  <DiscreteColorMapLegend map={colorByDistance('distance_overtaker')[3][5].slice(2)} />
-                  </List.Header>
-                  <DiscreteColorMapLegend
-                    map={colorByDistance("distance_overtaker")[3][5].slice(2)}
-                  />
                 </List.Item>
                 <List.Item>
-                  <List.Header>
+                  <List.Header>{_.upperFirst(t('general.zone.rural'))}</List.Header>
-                    {_.upperFirst(t("general.zone.rural"))}
+                  <DiscreteColorMapLegend map={colorByDistance('distance_overtaker')[3][3].slice(2)} />
-                  </List.Header>
-                  <DiscreteColorMapLegend
-                    map={colorByDistance("distance_overtaker")[3][3].slice(2)}
-                  />
                 </List.Item>
               </>
             )}
@@ -192,40 +178,36 @@ function LayerSidebar({
             toggle
             size="small"
             id="obsEvents.show"
-            style={{ float: "right" }}
+            style={{float: 'right'}}
             checked={showEvents}
-            onChange={() => setMapConfigFlag("obsEvents.show", !showEvents)}
+            onChange={() => setMapConfigFlag('obsEvents.show', !showEvents)}
           />
           <label htmlFor="obsEvents.show">
-            <Header as="h4">{t("MapPage.sidebar.obsEvents.title")}</Header>
+            <Header as="h4">{t('MapPage.sidebar.obsEvents.title')}</Header>
           </label>
         </List.Item>
         {showEvents && (
           <>
             <List.Item>
-              <List.Header>{_.upperFirst(t("general.zone.urban"))}</List.Header>
+              <List.Header>{_.upperFirst(t('general.zone.urban'))}</List.Header>
-              <DiscreteColorMapLegend
+              <DiscreteColorMapLegend map={colorByDistance('distance_overtaker')[3][5].slice(2)} />
-                map={colorByDistance("distance_overtaker")[3][5].slice(2)}
-              />
             </List.Item>
             <List.Item>
-              <List.Header>{_.upperFirst(t("general.zone.rural"))}</List.Header>
+              <List.Header>{_.upperFirst(t('general.zone.rural'))}</List.Header>
-              <DiscreteColorMapLegend
+              <DiscreteColorMapLegend map={colorByDistance('distance_overtaker')[3][3].slice(2)} />
-                map={colorByDistance("distance_overtaker")[3][3].slice(2)}
-              />
             </List.Item>
           </>
         )}
         <Divider />
 
         <List.Item>
-          <Header as="h4">{t("MapPage.sidebar.filters.title")}</Header>
+          <Header as="h4">{t('MapPage.sidebar.filters.title')}</Header>
         </List.Item>
 
         {login && (
           <>
             <List.Item>
-              <Header as="h5">{t("MapPage.sidebar.filters.userData")}</Header>
+              <Header as="h5">{t('MapPage.sidebar.filters.userData')}</Header>
             </List.Item>
 
             <List.Item>
@@ -234,15 +216,13 @@ function LayerSidebar({
                 size="small"
                 id="filters.currentUser"
                 checked={filtersCurrentUser}
-                onChange={() =>
+                onChange={() => setMapConfigFlag('filters.currentUser', !filtersCurrentUser)}
-                  setMapConfigFlag("filters.currentUser", !filtersCurrentUser)
+                label={t('MapPage.sidebar.filters.currentUser')}
-                }
-                label={t("MapPage.sidebar.filters.currentUser")}
               />
             </List.Item>
 
             <List.Item>
-              <Header as="h5">{t("MapPage.sidebar.filters.dateRange")}</Header>
+              <Header as="h5">{t('MapPage.sidebar.filters.dateRange')}</Header>
             </List.Item>
 
             <List.Item>
@@ -253,14 +233,12 @@ function LayerSidebar({
                   key: value,
                   text: t(`MapPage.sidebar.filters.dateMode.${value}`),
                 }))}
-                value={dateMode ?? "none"}
+                value={dateMode ?? 'none'}
-                onChange={(_e, { value }) =>
+                onChange={(_e, {value}) => setMapConfigFlag('filters.dateMode', value)}
-                  setMapConfigFlag("filters.dateMode", value)
-                }
               />
             </List.Item>
 
-            {dateMode == "range" && (
+            {dateMode == 'range' && (
               <List.Item>
                 <Input
                   type="date"
@@ -268,16 +246,14 @@ function LayerSidebar({
                   step="7"
                   size="small"
                   id="filters.startDate"
-                  onChange={(_e, { value }) =>
+                  onChange={(_e, {value}) => setMapConfigFlag('filters.startDate', value)}
-                    setMapConfigFlag("filters.startDate", value)
-                  }
                   value={startDate ?? null}
-                  label={t("MapPage.sidebar.filters.start")}
+                  label={t('MapPage.sidebar.filters.start')}
                 />
               </List.Item>
             )}
 
-            {dateMode == "range" && (
+            {dateMode == 'range' && (
               <List.Item>
                 <Input
                   type="date"
@@ -285,16 +261,14 @@ function LayerSidebar({
                   step="7"
                   size="small"
                   id="filters.endDate"
-                  onChange={(_e, { value }) =>
+                  onChange={(_e, {value}) => setMapConfigFlag('filters.endDate', value)}
-                    setMapConfigFlag("filters.endDate", value)
-                  }
                   value={endDate ?? null}
-                  label={t("MapPage.sidebar.filters.end")}
+                  label={t('MapPage.sidebar.filters.end')}
                 />
               </List.Item>
             )}
 
-            {dateMode == "threshold" && (
+            {dateMode == 'threshold' && (
               <List.Item>
                 <Input
                   type="date"
@@ -303,42 +277,33 @@ function LayerSidebar({
                   size="small"
                   id="filters.startDate"
                   value={startDate ?? null}
-                  onChange={(_e, { value }) =>
+                  onChange={(_e, {value}) => setMapConfigFlag('filters.startDate', value)}
-                    setMapConfigFlag("filters.startDate", value)
+                  label={t('MapPage.sidebar.filters.threshold')}
-                  }
-                  label={t("MapPage.sidebar.filters.threshold")}
                 />
               </List.Item>
             )}
 
-            {dateMode == "threshold" && (
+            {dateMode == 'threshold' && (
               <List.Item>
                 <span>
-                  {t("MapPage.sidebar.filters.before")}{" "}
+                  {t('MapPage.sidebar.filters.before')}{' '}
                   <Checkbox
                     toggle
                     size="small"
                     checked={thresholdAfter ?? false}
-                    onChange={() =>
+                    onChange={() => setMapConfigFlag('filters.thresholdAfter', !thresholdAfter)}
-                      setMapConfigFlag(
-                        "filters.thresholdAfter",
-                        !thresholdAfter
-                      )
-                    }
                     id="filters.thresholdAfter"
-                  />{" "}
+                  />{' '}
-                  {t("MapPage.sidebar.filters.after")}
+                  {t('MapPage.sidebar.filters.after')}
                 </span>
               </List.Item>
             )}
           </>
         )}
-        {!login && (
+        {!login && <List.Item>{t('MapPage.sidebar.filters.needsLogin')}</List.Item>}
-          <List.Item>{t("MapPage.sidebar.filters.needsLogin")}</List.Item>
-        )}
       </List>
     </div>
-  );
+  )
 }
 
 export default connect(
@@ -351,6 +316,6 @@ export default connect(
     ),
     login: state.login,
   }),
-  { setMapConfigFlag: setMapConfigFlagAction }
+  {setMapConfigFlag: setMapConfigFlagAction}
   //
-)(LayerSidebar);
+)(LayerSidebar)

frontend/src/pages/MapPage/RegionInfo.tsx

@@ -0,0 +1,33 @@
+import React, { useState, useCallback } from "react";
+import { createPortal } from "react-dom";
+import _ from "lodash";
+import { List, Header, Icon, Button } from "semantic-ui-react";
+
+import styles from "./styles.module.less";
+
+export default function RegionInfo({ region, mapInfoPortal, onClose }) {
+  const content = (
+    <>
+      <div className={styles.closeHeader}>
+        <Header as="h3">{region.properties.name || "Unnamed region"}</Header>
+        <Button primary icon onClick={onClose}>
+          <Icon name="close" />
+        </Button>
+      </div>
+
+      <List>
+        <List.Item>
+          <List.Header>Number of events</List.Header>
+          <List.Content>{region.properties.overtaking_event_count ?? 0}</List.Content>
+        </List.Item>
+      </List>
+    </>
+  );
+
+  return content && mapInfoPortal
+    ? createPortal(
+        <div className={styles.mapInfoBox}>{content}</div>,
+        mapInfoPortal
+      )
+    : null;
+}

frontend/src/pages/MapPage/RoadInfo.tsx

@@ -1,74 +1,57 @@
-import React, { useState, useCallback } from "react";
+import React, {useState, useCallback} from 'react'
-import _ from "lodash";
+import {createPortal} from 'react-dom'
-import {
+import _ from 'lodash'
-  Segment,
+import {Segment, Menu, Header, Label, Icon, Table, Message, Button} from 'semantic-ui-react'
-  Menu,
+import {Layer, Source} from 'react-map-gl'
-  Header,
+import {of, from, concat} from 'rxjs'
-  Label,
+import {useObservable} from 'rxjs-hooks'
-  Icon,
+import {switchMap, distinctUntilChanged} from 'rxjs/operators'
-  Table,
+import {Chart} from 'components'
-  Message,
+import {pairwise} from 'utils'
-  Button,
+import {useTranslation} from 'react-i18next'
-} from "semantic-ui-react";
-import { Layer, Source } from "react-map-gl";
-import { of, from, concat } from "rxjs";
-import { useObservable } from "rxjs-hooks";
-import { switchMap, distinctUntilChanged } from "rxjs/operators";
-import { Chart } from "components";
-import { pairwise } from "utils";
-import { useTranslation } from "react-i18next";
 
-import type { Location } from "types";
+import type {Location} from 'types'
-import api from "api";
+import api from 'api'
-import { colorByDistance, borderByZone } from "mapstyles";
+import {colorByDistance, borderByZone} from 'mapstyles'
 
-import styles from "./styles.module.less";
+import styles from './styles.module.less'
 
 function selectFromColorMap(colormap, value) {
-  let last = null;
+  let last = null
   for (let i = 0; i < colormap.length; i += 2) {
     if (colormap[i + 1] > value) {
-      return colormap[i];
+      return colormap[i]
     }
   }
-  return colormap[colormap.length - 1];
+  return colormap[colormap.length - 1]
 }
 
 const UNITS = {
-  distanceOvertaker: "m",
+  distanceOvertaker: 'm',
-  distanceStationary: "m",
+  distanceStationary: 'm',
-  speed: "km/h",
+  speed: 'km/h',
-};
+}
-const ZONE_COLORS = { urban: "blue", rural: "cyan", motorway: "purple" };
+const ZONE_COLORS = {urban: 'blue', rural: 'cyan', motorway: 'purple'}
-const CARDINAL_DIRECTIONS = [
+const CARDINAL_DIRECTIONS = ['north', 'northEast', 'east', 'southEast', 'south', 'southWest', 'west', 'northWest']
-  "north",
-  "northEast",
-  "east",
-  "southEast",
-  "south",
-  "southWest",
-  "west",
-  "northWest",
-];
 const getCardinalDirection = (t, bearing) => {
   if (bearing == null) {
-    return t("MapPage.roadInfo.cardinalDirections.unknown");
+    return t('MapPage.roadInfo.cardinalDirections.unknown')
   } else {
-    const n = CARDINAL_DIRECTIONS.length;
+    const n = CARDINAL_DIRECTIONS.length
-    const i = Math.floor(((bearing / 360.0) * n + 0.5) % n);
+    const i = Math.floor(((bearing / 360.0) * n + 0.5) % n)
-    const name = CARDINAL_DIRECTIONS[i];
+    const name = CARDINAL_DIRECTIONS[i]
-    return t(`MapPage.roadInfo.cardinalDirections.${name}`);
+    return t(`MapPage.roadInfo.cardinalDirections.${name}`)
   }
-};
+}
 
-function RoadStatsTable({ data }) {
+function RoadStatsTable({data}) {
-  const { t } = useTranslation();
+  const {t} = useTranslation()
   return (
     <Table size="small" compact>
       <Table.Header>
         <Table.Row>
           <Table.HeaderCell textAlign="right"></Table.HeaderCell>
-          {["distanceOvertaker", "distanceStationary", "speed"].map((prop) => (
+          {['distanceOvertaker', 'distanceStationary', 'speed'].map((prop) => (
             <Table.HeaderCell key={prop} textAlign="right">
               {t(`MapPage.roadInfo.${prop}`)}
             </Table.HeaderCell>
@@ -76,58 +59,52 @@ function RoadStatsTable({ data }) {
         </Table.Row>
       </Table.Header>
       <Table.Body>
-        {["count", "min", "median", "max", "mean"].map((stat) => (
+        {['count', 'min', 'median', 'max', 'mean'].map((stat) => (
           <Table.Row key={stat}>
             <Table.Cell> {t(`MapPage.roadInfo.${stat}`)}</Table.Cell>
-            {["distanceOvertaker", "distanceStationary", "speed"].map(
+            {['distanceOvertaker', 'distanceStationary', 'speed'].map((prop) => (
-              (prop) => (
+              <Table.Cell key={prop} textAlign="right">
-                <Table.Cell key={prop} textAlign="right">
+                {(data[prop]?.statistics?.[stat] * (prop === `speed` && stat != 'count' ? 3.6 : 1)).toFixed(
-                  {(
+                  stat === 'count' ? 0 : 2
-                    data[prop]?.statistics?.[stat] *
+                )}
-                    (prop === `speed` && stat != "count" ? 3.6 : 1)
+                {stat !== 'count' && ` ${UNITS[prop]}`}
-                  ).toFixed(stat === "count" ? 0 : 2)}
+              </Table.Cell>
-                  {stat !== "count" && ` ${UNITS[prop]}`}
+            ))}
-                </Table.Cell>
-              )
-            )}
           </Table.Row>
         ))}
       </Table.Body>
     </Table>
-  );
+  )
 }
 
-function HistogramChart({ bins, counts, zone }) {
+function HistogramChart({bins, counts, zone}) {
-  const diff = bins[1] - bins[0];
+  const diff = bins[1] - bins[0]
-  const colortype = zone === "rural" ? 3 : 5;
+  const colortype = zone === 'rural' ? 3 : 5
   const data = _.zip(
     bins.slice(0, bins.length - 1).map((v) => v + diff / 2),
     counts
   ).map((value) => ({
     value,
     itemStyle: {
-      color: selectFromColorMap(
+      color: selectFromColorMap(colorByDistance()[3][colortype].slice(2), value[0]),
-        colorByDistance()[3][colortype].slice(2),
-        value[0]
-      ),
     },
-  }));
+  }))
 
   return (
     <Chart
-      style={{ height: 240 }}
+      style={{height: 240}}
       option={{
-        grid: { top: 30, bottom: 30, right: 30, left: 30 },
+        grid: {top: 30, bottom: 30, right: 30, left: 30},
         xAxis: {
-          type: "value",
+          type: 'value',
-          axisLabel: { formatter: (v) => `${Math.round(v * 100)} cm` },
+          axisLabel: {formatter: (v) => `${Math.round(v * 100)} cm`},
           min: 0,
           max: 2.5,
         },
         yAxis: {},
         series: [
           {
-            type: "bar",
+            type: 'bar',
             data,
 
             barMaxWidth: 20,
@@ -135,142 +112,120 @@ function HistogramChart({ bins, counts, zone }) {
         ],
       }}
     />
-  );
+  )
+}
+
+interface ArrayStats {
+  statistics: {
+    count: number
+    mean: number
+    min: number
+    max: number
+    median: number
+  }
+  histogram: {
+    bins: number[]
+    counts: number[]
+  }
+  values: number[]
+}
+
+export interface RoadDirectionInfo {
+  bearing: number
+  distanceOvertaker: ArrayStats
+  distanceStationary: ArrayStats
+  speed: ArrayStats
+}
+
+export interface RoadInfoType {
+  road: {
+    way_id: number
+    zone: 'urban' | 'rural' | null
+    name: string
+    directionality: -1 | 0 | 1
+    oneway: boolean
+    geometry: Object
+  }
+  forwards: RoadDirectionInfo
+  backwards: RoadDirectionInfo
 }
 
 export default function RoadInfo({
-  clickLocation,
+  roadInfo: info,
   hasFilters,
   onClose,
+  mapInfoPortal,
 }: {
-  clickLocation: Location | null;
+  roadInfo: RoadInfoType
-  hasFilters: boolean;
+  hasFilters: boolean
-  onClose: () => void;
+  onClose: () => void
+  mapInfoPortal: HTMLElement
 }) {
-  const { t } = useTranslation();
+  const {t} = useTranslation()
-  const [direction, setDirection] = useState("forwards");
+  const [direction, setDirection] = useState('forwards')
 
   const onClickDirection = useCallback(
-    (e, { name }) => {
+    (e, {name}) => {
-      e.preventDefault();
+      e.preventDefault()
-      e.stopPropagation();
+      e.stopPropagation()
-      setDirection(name);
+      setDirection(name)
     },
     [setDirection]
-  );
+  )
 
-  const info = useObservable(
+  // TODO: change based on left-hand/right-hand traffic
-    (_$, inputs$) =>
+  const offsetDirection = info.road.oneway ? 0 : direction === 'forwards' ? 1 : -1
-      inputs$.pipe(
-        distinctUntilChanged(_.isEqual),
-        switchMap(([location]) =>
-          location
-            ? concat(
-                of(null),
-                from(
-                  api.get("/mapdetails/road", {
-                    query: {
-                      ...location,
-                      radius: 100,
-                    },
-                  })
-                )
-              )
-            : of(null)
-        )
-      ),
-    null,
-    [clickLocation]
-  );
 
-  if (!clickLocation) {
+  const content = (
-    return null;
+    <>
-  }
+      <div className={styles.closeHeader}>
+        <Header as="h3">{info?.road.name || t('MapPage.roadInfo.unnamedWay')}</Header>
+        <Button primary icon onClick={onClose}>
+          <Icon name="close" />
+        </Button>
+      </div>
 
-  const loading = info == null;
+      {hasFilters && (
+        <Message info icon>
+          <Icon name="info circle" small />
+          <Message.Content>{t('MapPage.roadInfo.hintFiltersNotApplied')}</Message.Content>
+        </Message>
+      )}
 
-  const offsetDirection = info?.road?.oneway
+      {info?.road.zone && (
-    ? 0
+        <Label size="small" color={ZONE_COLORS[info?.road.zone]}>
-    : direction === "forwards"
+          {t(`general.zone.${info.road.zone}`)}
-    ? 1
+        </Label>
-    : -1; // TODO: change based on left-hand/right-hand traffic
+      )}
 
-  const content =
+      {info?.road.oneway && (
-    !loading && !info.road ? (
+        <Label size="small" color="blue">
-      "No road found."
+          <Icon name="long arrow alternate right" fitted /> {t('MapPage.roadInfo.oneway')}
-    ) : (
+        </Label>
-      <>
+      )}
-        <Header as="h3">
-          {loading
-            ? "..."
-            : info?.road.name || t("MapPage.roadInfo.unnamedWay")}
 
-          <Button
+      {info?.road.oneway ? null : (
-            style={{ float: "right" }}
+        <Menu size="tiny" pointing>
-            onClick={onClose}
+          <Menu.Item header>{t('MapPage.roadInfo.direction')}</Menu.Item>
-            title={t("MapPage.roadInfo.closeTooltip")}
+          <Menu.Item name="forwards" active={direction === 'forwards'} onClick={onClickDirection}>
-            size="small"
+            {getCardinalDirection(t, info?.forwards?.bearing)}
-            icon="close"
+          </Menu.Item>
-            basic
+          <Menu.Item name="backwards" active={direction === 'backwards'} onClick={onClickDirection}>
-          />
+            {getCardinalDirection(t, info?.backwards?.bearing)}
-        </Header>
+          </Menu.Item>
+        </Menu>
+      )}
 
-        {hasFilters && (
+      {info?.[direction] && <RoadStatsTable data={info[direction]} />}
-          <Message info icon>
-            <Icon name="info circle" small />
-            <Message.Content>
-              {t("MapPage.roadInfo.hintFiltersNotApplied")}
-            </Message.Content>
-          </Message>
-        )}
 
-        {info?.road.zone && (
+      {info?.[direction]?.distanceOvertaker?.histogram && (
-          <Label size="small" color={ZONE_COLORS[info?.road.zone]}>
+        <>
-            {t(`general.zone.${info.road.zone}`)}
+          <Header as="h5">{t('MapPage.roadInfo.overtakerDistanceDistribution')}</Header>
-          </Label>
+          <HistogramChart {...info[direction]?.distanceOvertaker?.histogram} />
-        )}
+        </>
-
+      )}
-        {info?.road.oneway && (
+    </>
-          <Label size="small" color="blue">
+  )
-            <Icon name="long arrow alternate right" fitted />{" "}
-            {t("MapPage.roadInfo.oneway")}
-          </Label>
-        )}
-
-        {info?.road.oneway ? null : (
-          <Menu size="tiny" fluid secondary>
-            <Menu.Item header>{t("MapPage.roadInfo.direction")}</Menu.Item>
-            <Menu.Item
-              name="forwards"
-              active={direction === "forwards"}
-              onClick={onClickDirection}
-            >
-              {getCardinalDirection(t, info?.forwards?.bearing)}
-            </Menu.Item>
-            <Menu.Item
-              name="backwards"
-              active={direction === "backwards"}
-              onClick={onClickDirection}
-            >
-              {getCardinalDirection(t, info?.backwards?.bearing)}
-            </Menu.Item>
-          </Menu>
-        )}
-
-        {info?.[direction] && <RoadStatsTable data={info[direction]} />}
-
-        {info?.[direction]?.distanceOvertaker?.histogram && (
-          <>
-            <Header as="h5">
-              {t("MapPage.roadInfo.overtakerDistanceDistribution")}
-            </Header>
-            <HistogramChart
-              {...info[direction]?.distanceOvertaker?.histogram}
-            />
-          </>
-        )}
-      </>
-    );
 
   return (
     <>
@@ -280,22 +235,14 @@ export default function RoadInfo({
             id="route"
             type="line"
             paint={{
-              "line-width": [
+              'line-width': ['interpolate', ['linear'], ['zoom'], 14, 6, 17, 12],
-                "interpolate",
+              'line-color': '#18FFFF',
-                ["linear"],
+              'line-opacity': 0.5,
-                ["zoom"],
-                14,
-                6,
-                17,
-                12,
-              ],
-              "line-color": "#18FFFF",
-              "line-opacity": 0.5,
               ...{
-                "line-offset": [
+                'line-offset': [
-                  "interpolate",
+                  'interpolate',
-                  ["exponential", 1.5],
+                  ['exponential', 1.5],
-                  ["zoom"],
+                  ['zoom'],
                   12,
                   offsetDirection,
                   19,
@@ -307,11 +254,7 @@ export default function RoadInfo({
         </Source>
       )}
 
-      {content && (
+      {content && mapInfoPortal && createPortal(<div className={styles.mapInfoBox}>{content}</div>, mapInfoPortal)}
-        <div className={styles.mapInfoBox}>
-          <Segment loading={loading}>{content}</Segment>
-        </div>
-      )}
     </>
-  );
+  )
 }

frontend/src/pages/MapPage/index.tsx

@@ -1,241 +1,254 @@
-import React, { useState, useCallback, useMemo } from "react";
+import React, {useState, useCallback, useMemo, useRef} from 'react'
-import _ from "lodash";
+import _ from 'lodash'
-import { connect } from "react-redux";
+import {connect} from 'react-redux'
-import { Button } from "semantic-ui-react";
+import {Button} from 'semantic-ui-react'
-import { Layer, Source } from "react-map-gl";
+import {Layer, Source} from 'react-map-gl'
-import produce from "immer";
+import produce from 'immer'
-import classNames from "classnames";
+import classNames from 'classnames'
 
-import type { Location } from "types";
+import api from 'api'
-import { Page, Map } from "components";
+import type {Location} from 'types'
-import { useConfig } from "config";
+import {Page, Map} from 'components'
-import {
+import {useConfig} from 'config'
-  colorByDistance,
+import {colorByDistance, colorByCount, getRegionLayers, borderByZone, isValidAttribute} from 'mapstyles'
-  colorByCount,
+import {useMapConfig} from 'reducers/mapConfig'
-  borderByZone,
-  reds,
-  isValidAttribute,
-} from "mapstyles";
-import { useMapConfig } from "reducers/mapConfig";
 
-import RoadInfo from "./RoadInfo";
+import RoadInfo, {RoadInfoType} from './RoadInfo'
-import LayerSidebar from "./LayerSidebar";
+import RegionInfo from './RegionInfo'
-import styles from "./styles.module.less";
+import LayerSidebar from './LayerSidebar'
+import styles from './styles.module.less'
 
 const untaggedRoadsLayer = {
-  id: "obs_roads_untagged",
+  id: 'obs_roads_untagged',
-  type: "line",
+  type: 'line',
-  source: "obs",
+  source: 'obs',
-  "source-layer": "obs_roads",
+  'source-layer': 'obs_roads',
-  filter: ["!", ["to-boolean", ["get", "distance_overtaker_mean"]]],
+  minzoom: 12,
+  filter: ['!', ['to-boolean', ['get', 'distance_overtaker_mean']]],
   layout: {
-    "line-cap": "round",
+    'line-cap': 'round',
-    "line-join": "round",
+    'line-join': 'round',
   },
   paint: {
-    "line-width": ["interpolate", ["exponential", 1.5], ["zoom"], 12, 2, 17, 2],
+    'line-width': ['interpolate', ['exponential', 1.5], ['zoom'], 12, 2, 17, 2],
-    "line-color": "#ABC",
+    'line-color': '#ABC',
-    "line-opacity": ["interpolate", ["linear"], ["zoom"], 14, 0, 15, 1],
+    // "line-opacity": ["interpolate", ["linear"], ["zoom"], 14, 0, 15, 1],
-    "line-offset": [
+    'line-offset': [
-      "interpolate",
+      'interpolate',
-      ["exponential", 1.5],
+      ['exponential', 1.5],
-      ["zoom"],
+      ['zoom'],
       12,
-      ["get", "offset_direction"],
+      ['get', 'offset_direction'],
       19,
-      ["*", ["get", "offset_direction"], 8],
+      ['*', ['get', 'offset_direction'], 8],
     ],
   },
   minzoom: 12,
-};
+}
 
-const getUntaggedRoadsLayer = (colorAttribute, maxCount) =>
+const getUntaggedRoadsLayer = (colorAttribute) =>
   produce(untaggedRoadsLayer, (draft) => {
-    draft.filter = ["!", isValidAttribute(colorAttribute)];
+    draft.filter = ['!', isValidAttribute(colorAttribute)]
-  });
+  })
 
 const getRoadsLayer = (colorAttribute, maxCount) =>
   produce(untaggedRoadsLayer, (draft) => {
-    draft.id = "obs_roads_normal";
+    draft.id = 'obs_roads_normal'
-    draft.filter = isValidAttribute(colorAttribute);
+    draft.filter = isValidAttribute(colorAttribute)
-    draft.paint["line-width"][6] = 6; // scale bigger on zoom
+    draft.minzoom = 10
-    draft.paint["line-color"] = colorAttribute.startsWith("distance_")
+    draft.paint['line-width'][6] = 6 // scale bigger on zoom
+    draft.paint['line-color'] = colorAttribute.startsWith('distance_')
       ? colorByDistance(colorAttribute)
-      : colorAttribute.endsWith("_count")
+      : colorAttribute.endsWith('_count')
       ? colorByCount(colorAttribute, maxCount)
-      : colorAttribute.endsWith("zone")
+      : colorAttribute.endsWith('zone')
       ? borderByZone()
-      : "#DDD";
+      : '#DDD'
-    draft.paint["line-opacity"][3] = 12;
+    // draft.paint["line-opacity"][3] = 12;
-    draft.paint["line-opacity"][5] = 13;
+    // draft.paint["line-opacity"][5] = 13;
-  });
+  })
 
 const getEventsLayer = () => ({
-  id: "obs_events",
+  id: 'obs_events',
-  type: "circle",
+  type: 'circle',
-  source: "obs",
+  source: 'obs',
-  "source-layer": "obs_events",
+  'source-layer': 'obs_events',
   paint: {
-    "circle-radius": ["interpolate", ["linear"], ["zoom"], 14, 3, 17, 8],
+    'circle-radius': ['interpolate', ['linear'], ['zoom'], 14, 3, 17, 8],
-    "circle-color": colorByDistance("distance_overtaker"),
+    'circle-color': colorByDistance('distance_overtaker'),
   },
   minzoom: 11,
-});
+})
 
 const getEventsTextLayer = () => ({
-  id: "obs_events_text",
+  id: 'obs_events_text',
-  type: "symbol",
+  type: 'symbol',
   minzoom: 18,
-  source: "obs",
+  source: 'obs',
-  "source-layer": "obs_events",
+  'source-layer': 'obs_events',
   layout: {
-    "text-field": [
+    'text-field': [
-      "number-format",
+      'number-format',
-      ["get", "distance_overtaker"],
+      ['get', 'distance_overtaker'],
-      { "min-fraction-digits": 2, "max-fraction-digits": 2 },
+      {'min-fraction-digits': 2, 'max-fraction-digits': 2},
     ],
-    "text-allow-overlap": true,
+    'text-allow-overlap': true,
-    "text-font": ["Open Sans Bold", "Arial Unicode MS Regular"],
+    'text-font': ['Open Sans Bold', 'Arial Unicode MS Regular'],
-    "text-size": 14,
+    'text-size': 14,
-    "text-keep-upright": false,
+    'text-keep-upright': false,
-    "text-anchor": "left",
+    'text-anchor': 'left',
-    "text-radial-offset": 1,
+    'text-radial-offset': 1,
-    "text-rotate": ["-", 90, ["*", ["get", "course"], 180 / Math.PI]],
+    'text-rotate': ['-', 90, ['*', ['get', 'course'], 180 / Math.PI]],
-    "text-rotation-alignment": "map",
+    'text-rotation-alignment': 'map',
   },
   paint: {
-    "text-halo-color": "rgba(255, 255, 255, 1)",
+    'text-halo-color': 'rgba(255, 255, 255, 1)',
-    "text-halo-width": 1,
+    'text-halo-width': 1,
-    "text-opacity": ["interpolate", ["linear"], ["zoom"], 15, 0, 15.3, 1],
+    'text-opacity': ['interpolate', ['linear'], ['zoom'], 15, 0, 15.3, 1],
   },
-});
+})
 
-function MapPage({ login }) {
+interface RegionInfo {
-  const { obsMapSource, banner } = useConfig() || {};
+  properties: {
-  const [clickLocation, setClickLocation] = useState<Location | null>(null);
+    admin_level: number
+    name: string
+    overtaking_event_count: number
+  }
+}
 
-  const mapConfig = useMapConfig();
+type Details = {type: 'road'; road: RoadInfoType} | {type: 'region'; region: RegionInfo}
+
+function MapPage({login}) {
+  const {obsMapSource, banner} = useConfig() || {}
+  const [details, setDetails] = useState<null | Details>(null)
+
+  const onCloseDetails = useCallback(() => setDetails(null), [setDetails])
+
+  const mapConfig = useMapConfig()
+
+  const viewportRef = useRef()
+  const mapInfoPortal = useRef()
+
+  const onViewportChange = useCallback(
+    (viewport) => {
+      viewportRef.current = viewport
+    },
+    [viewportRef]
+  )
 
   const onClick = useCallback(
-    (e) => {
+    async (e) => {
-      let node = e.target;
+      // check if we clicked inside the mapInfoBox, if so, early exit
+      let node = e.target
       while (node) {
-        if (
+        if ([styles.mapInfoBox, styles.mapToolbar].some((className) => node?.classList?.contains(className))) {
-          [styles.mapInfoBox, styles.mapToolbar].some((className) =>
+          return
-            node?.classList?.contains(className)
-          )
-        ) {
-          return;
         }
-        node = node.parentNode;
+        node = node.parentNode
       }
 
-      setClickLocation({ longitude: e.lngLat[0], latitude: e.lngLat[1] });
+      const {zoom} = viewportRef.current
-    },
-    [setClickLocation]
-  );
-  const onCloseRoadInfo = useCallback(() => {
-    setClickLocation(null);
-  }, [setClickLocation]);
 
-  const [layerSidebar, setLayerSidebar] = useState(true);
+      if (zoom < 10) {
+        const clickedRegion = e.features?.find((f) => f.source === 'obs' && f.sourceLayer === 'obs_regions')
+        setDetails(clickedRegion ? {type: 'region', region: clickedRegion} : null)
+      } else {
+        const road = await api.get('/mapdetails/road', {
+          query: {
+            longitude: e.lngLat[0],
+            latitude: e.lngLat[1],
+            radius: 100,
+          },
+        })
+        setDetails(road?.road ? {type: 'road', road} : null)
+      }
+    },
+    [setDetails]
+  )
+
+  const [layerSidebar, setLayerSidebar] = useState(true)
 
   const {
-    obsRoads: { attribute, maxCount },
+    obsRoads: {attribute, maxCount},
-  } = mapConfig;
+  } = mapConfig
 
-  const layers = [];
+  const layers = []
 
-  const untaggedRoadsLayerCustom = useMemo(
+  const untaggedRoadsLayerCustom = useMemo(() => getUntaggedRoadsLayer(attribute), [attribute])
-    () => getUntaggedRoadsLayer(attribute),
-    [attribute]
-  );
   if (mapConfig.obsRoads.show && mapConfig.obsRoads.showUntagged) {
-    layers.push(untaggedRoadsLayerCustom);
+    layers.push(untaggedRoadsLayerCustom)
   }
 
-  const roadsLayer = useMemo(
+  const roadsLayer = useMemo(() => getRoadsLayer(attribute, maxCount), [attribute, maxCount])
-    () => getRoadsLayer(attribute, maxCount),
-    [attribute, maxCount]
-  );
   if (mapConfig.obsRoads.show) {
-    layers.push(roadsLayer);
+    layers.push(roadsLayer)
   }
 
-  const eventsLayer = useMemo(() => getEventsLayer(), []);
+  const regionLayers = useMemo(() => getRegionLayers(), [])
-  const eventsTextLayer = useMemo(() => getEventsTextLayer(), []);
+  if (mapConfig.obsRegions.show) {
+    layers.push(...regionLayers)
+  }
+
+  const eventsLayer = useMemo(() => getEventsLayer(), [])
+  const eventsTextLayer = useMemo(() => getEventsTextLayer(), [])
+
   if (mapConfig.obsEvents.show) {
-    layers.push(eventsLayer);
+    layers.push(eventsLayer)
-    layers.push(eventsTextLayer);
+    layers.push(eventsTextLayer)
   }
 
   const onToggleLayerSidebarButtonClick = useCallback(
     (e) => {
-      e.stopPropagation();
+      e.stopPropagation()
-      e.preventDefault();
+      e.preventDefault()
-      console.log("toggl;e");
+      console.log('toggl;e')
-      setLayerSidebar((v) => !v);
+      setLayerSidebar((v) => !v)
     },
     [setLayerSidebar]
-  );
+  )
 
   if (!obsMapSource) {
-    return null;
+    return null
   }
 
   const tiles = obsMapSource?.tiles?.map((tileUrl: string) => {
-    const query = new URLSearchParams();
+    const query = new URLSearchParams()
     if (login) {
       if (mapConfig.filters.currentUser) {
-        query.append("user", login.id);
+        query.append('user', login.id)
       }
 
-      if (mapConfig.filters.dateMode === "range") {
+      if (mapConfig.filters.dateMode === 'range') {
         if (mapConfig.filters.startDate) {
-          query.append("start", mapConfig.filters.startDate);
+          query.append('start', mapConfig.filters.startDate)
         }
         if (mapConfig.filters.endDate) {
-          query.append("end", mapConfig.filters.endDate);
+          query.append('end', mapConfig.filters.endDate)
         }
-      } else if (mapConfig.filters.dateMode === "threshold") {
+      } else if (mapConfig.filters.dateMode === 'threshold') {
         if (mapConfig.filters.startDate) {
-          query.append(
+          query.append(mapConfig.filters.thresholdAfter ? 'start' : 'end', mapConfig.filters.startDate)
-            mapConfig.filters.thresholdAfter ? "start" : "end",
-            mapConfig.filters.startDate
-          );
         }
       }
     }
-    const queryString = String(query);
+    const queryString = String(query)
-    return tileUrl + (queryString ? "?" : "") + queryString;
+    return tileUrl + (queryString ? '?' : '') + queryString
-  });
+  })
 
-  const hasFilters: boolean =
+  const hasFilters: boolean = login && (mapConfig.filters.currentUser || mapConfig.filters.dateMode !== 'none')
-    login &&
-    (mapConfig.filters.currentUser || mapConfig.filters.dateMode !== "none");
 
   return (
     <Page fullScreen title="Map">
-      <div
+      <div className={classNames(styles.mapContainer, banner ? styles.hasBanner : null)} ref={mapInfoPortal}>
-        className={classNames(
-          styles.mapContainer,
-          banner ? styles.hasBanner : null
-        )}
-      >
         {layerSidebar && (
           <div className={styles.mapSidebar}>
             <LayerSidebar />
           </div>
         )}
         <div className={styles.map}>
-          <Map viewportFromUrl onClick={onClick} hasToolbar>
+          <Map viewportFromUrl onClick={onClick} hasToolbar onViewportChange={onViewportChange}>
             <div className={styles.mapToolbar}>
-              <Button
+              <Button primary icon="bars" active={layerSidebar} onClick={onToggleLayerSidebarButtonClick} />
-                primary
-                icon="bars"
-                active={layerSidebar}
-                onClick={onToggleLayerSidebarButtonClick}
-              />
             </div>
             <Source id="obs" {...obsMapSource} tiles={tiles}>
               {layers.map((layer) => (
@@ -243,14 +256,23 @@ function MapPage({ login }) {
               ))}
             </Source>
 
-            <RoadInfo
+            {details?.type === 'road' && details?.road?.road && (
-              {...{ clickLocation, hasFilters, onClose: onCloseRoadInfo }}
+              <RoadInfo
-            />
+                roadInfo={details.road}
+                mapInfoPortal={mapInfoPortal.current}
+                onClose={onCloseDetails}
+                {...{hasFilters}}
+              />
+            )}
+
+            {details?.type === 'region' && details?.region && (
+              <RegionInfo region={details.region} mapInfoPortal={mapInfoPortal.current} onClose={onCloseDetails} />
+            )}
           </Map>
         </div>
       </div>
     </Page>
-  );
+  )
 }
 
-export default connect((state) => ({ login: state.login }))(MapPage);
+export default connect((state) => ({login: state.login}))(MapPage)

frontend/src/pages/MapPage/styles.module.less

@@ -24,12 +24,11 @@
 }
 
 .mapInfoBox {
-  position: absolute;
-  right: 16px;
-  top: 32px;
-  max-height: 100%;
   width: 36rem;
   overflow: auto;
+  border-left: 1px solid @borderColor;
+  background: white;
+  padding: 16px;
 }
 
 .mapToolbar {
@@ -37,3 +36,32 @@
   left: 16px;
   top: 16px;
 }
+
+.closeHeader {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+}
+
+
+@media @mobile {
+  .mapContainer {
+    height: auto;
+    min-height: calc(100vh - @menuHeight);
+    flex-direction: column;
+  }
+
+  .map {
+    height: 60vh;
+  }
+
+  .mapSidebar {
+    width: auto;
+    height: auto;
+  }
+
+  .mapInfoBox {
+    width: auto;
+    height: auto;
+  }
+}

frontend/src/reducers/mapConfig.ts

@@ -1,95 +1,92 @@
-import { useMemo } from "react";
+import {useMemo} from 'react'
-import { useSelector } from "react-redux";
+import {useSelector} from 'react-redux'
-import produce from "immer";
+import produce from 'immer'
-import _ from "lodash";
+import _ from 'lodash'
 
-type BaseMapStyle = "positron" | "bright";
+type BaseMapStyle = 'positron' | 'bright'
 
 type RoadAttribute =
-  | "distance_overtaker_mean"
+  | 'distance_overtaker_mean'
-  | "distance_overtaker_min"
+  | 'distance_overtaker_min'
-  | "distance_overtaker_max"
+  | 'distance_overtaker_max'
-  | "distance_overtaker_median"
+  | 'distance_overtaker_median'
-  | "overtaking_event_count"
+  | 'overtaking_event_count'
-  | "usage_count"
+  | 'usage_count'
-  | "zone";
+  | 'zone'
 
 export type MapConfig = {
   baseMap: {
-    style: BaseMapStyle;
+    style: BaseMapStyle
-  };
+  }
   obsRoads: {
-    show: boolean;
+    show: boolean
-    showUntagged: boolean;
+    showUntagged: boolean
-    attribute: RoadAttribute;
+    attribute: RoadAttribute
-    maxCount: number;
+    maxCount: number
-  };
+  }
   obsEvents: {
-    show: boolean;
+    show: boolean
-  };
+  }
+  obsRegions: {
+    show: boolean
+  }
   filters: {
-    currentUser: boolean;
+    currentUser: boolean
-    dateMode: "none" | "range" | "threshold";
+    dateMode: 'none' | 'range' | 'threshold'
-    startDate?: null | string;
+    startDate?: null | string
-    endDate?: null | string;
+    endDate?: null | string
-    thresholdAfter?: null | boolean;
+    thresholdAfter?: null | boolean
-  };
+  }
-};
+}
 
 export const initialState: MapConfig = {
   baseMap: {
-    style: "positron",
+    style: 'positron',
   },
   obsRoads: {
     show: true,
     showUntagged: true,
-    attribute: "distance_overtaker_median",
+    attribute: 'distance_overtaker_median',
     maxCount: 20,
   },
   obsEvents: {
     show: false,
   },
+  obsRegions: {
+    show: true,
+  },
   filters: {
     currentUser: false,
-    dateMode: "none",
+    dateMode: 'none',
     startDate: null,
     endDate: null,
     thresholdAfter: true,
   },
-};
+}
 
 type MapConfigAction = {
-  type: "MAP_CONFIG.SET_FLAG";
+  type: 'MAP_CONFIG.SET_FLAG'
-  payload: { flag: string; value: any };
+  payload: {flag: string; value: any}
-};
+}
 
-export function setMapConfigFlag(
+export function setMapConfigFlag(flag: string, value: unknown): MapConfigAction {
-  flag: string,
+  return {type: 'MAP_CONFIG.SET_FLAG', payload: {flag, value}}
-  value: unknown
-): MapConfigAction {
-  return { type: "MAP_CONFIG.SET_FLAG", payload: { flag, value } };
 }
 
 export function useMapConfig() {
-  const mapConfig = useSelector((state) => state.mapConfig);
+  const mapConfig = useSelector((state) => state.mapConfig)
-  const result = useMemo(
+  const result = useMemo(() => _.merge({}, initialState, mapConfig), [mapConfig])
-    () => _.merge({}, initialState, mapConfig),
+  return result
-    [mapConfig]
-  );
-  return result;
 }
 
-export default function mapConfigReducer(
+export default function mapConfigReducer(state: MapConfig = initialState, action: MapConfigAction) {
-  state: MapConfig = initialState,
-  action: MapConfigAction
-) {
   switch (action.type) {
-    case "MAP_CONFIG.SET_FLAG":
+    case 'MAP_CONFIG.SET_FLAG':
       return produce(state, (draft) => {
-        _.set(draft, action.payload.flag, action.payload.value);
+        _.set(draft, action.payload.flag, action.payload.value)
-      });
+      })
 
     default:
-      return state;
+      return state
   }
 }

roads_import.lua

@@ -50,6 +50,9 @@ local MOTORWAY_TYPES = {
   "motorway_link",
 }
 
+local ADMIN_LEVEL_MIN = 2
+local ADMIN_LEVEL_MAX = 8
+
 local ONEWAY_YES = {"yes", "true", "1"}
 local ONEWAY_REVERSE = {"reverse", "-1"}
 
@@ -63,6 +66,13 @@ local roads = osm2pgsql.define_way_table('road', {
 
 local minspeed_rural = 60
 
+local regions = osm2pgsql.define_relation_table('region', {
+  { column = 'name', type = 'text' },
+  { column = 'geometry', type = 'geometry' },
+  { column = 'admin_level', type = 'int' },
+  { column = 'tags', type = 'hstore' },
+})
+
 function osm2pgsql.process_way(object)
   if object.tags.highway and contains(HIGHWAY_TYPES, object.tags.highway) then
     local tags = object.tags
@@ -131,3 +141,21 @@ function osm2pgsql.process_way(object)
     })
   end
 end
+
+function osm2pgsql.process_relation(object)
+  local admin_level = tonumber(object.tags.admin_level)
+  if object.tags.boundary == "administrative" and admin_level and admin_level >= ADMIN_LEVEL_MIN and admin_level <= ADMIN_LEVEL_MAX then
+    regions:add_row({
+      geometry = { create = 'area' },
+      name = object.tags.name,
+      admin_level = admin_level,
+      tags = object.tags,
+    })
+  end
+end
+
+function osm2pgsql.select_relation_members(relation)
+    if relation.tags.type == 'route' then
+        return { ways = osm2pgsql.way_member_ids(relation) }
+    end
+end

tile-generator/layers/obs_events/layer.sql

@@ -15,6 +15,7 @@ RETURNS TABLE(event_id bigint, geometry geometry, distance_overtaker float, dist
     FULL OUTER JOIN road ON road.way_id = overtaking_event.way_id
     JOIN track on track.id = overtaking_event.track_id
     WHERE ST_Transform(overtaking_event.geometry, 3857) && bbox
+      AND zoom_level >= 10
       AND (user_id is NULL OR user_id = track.author_id)
       AND time BETWEEN COALESCE(min_time, '1900-01-01'::timestamp) AND COALESCE(max_time, '2100-01-01'::timestamp);
 

tile-generator/layers/obs_regions/layer.sql

@@ -0,0 +1,26 @@
+DROP FUNCTION IF EXISTS layer_obs_regions(geometry, int);
+
+CREATE OR REPLACE FUNCTION layer_obs_regions(bbox geometry, zoom_level int)
+RETURNS TABLE(
+  region_id bigint,
+  geometry geometry,
+  name text,
+  admin_level int,
+  overtaking_event_count int
+) AS $$
+
+    SELECT
+      region.relation_id::bigint as region_id,
+      ST_SimplifyPreserveTopology(region.geometry, ZRes(zoom_level + 2)) as geometry,
+      region.name as name,
+      region.admin_level as admin_level,
+      count(overtaking_event.id)::int as overtaking_event_count
+    FROM region
+      LEFT JOIN overtaking_event on ST_Within(ST_Transform(overtaking_event.geometry, 3857), region.geometry)
+    WHERE
+      zoom_level >= 4 AND
+      zoom_level <= 12 AND
+      ST_Transform(region.geometry, 3857) && bbox
+    GROUP BY region.relation_id, region.name, region.geometry, region.admin_level
+
+$$ LANGUAGE SQL IMMUTABLE;

tile-generator/layers/obs_regions/obs_regions.yaml

@@ -0,0 +1,23 @@
+layer:
+  id: "obs_regions"
+  description: |
+      Statistics on administrative boundary areas ("regions")
+  buffer_size: 4
+  fields:
+    overtaking_event_count: |
+      Number of overtaking events.
+    name: |
+      Name of the region
+    admin_level: |
+      Administrative level of the boundary, as tagged in OpenStreetMap
+  defaults:
+    srs: EPSG:3785
+  datasource:
+    srid: 3857
+    geometry_field: geometry
+    key_field: region_id
+    key_field_as_attribute: no
+    query: (SELECT region_id, geometry, name, admin_level, overtaking_event_count FROM layer_obs_regions(!bbox!, z(!scale_denominator!))) AS t
+
+schema:
+  - ./layer.sql

tile-generator/layers/obs_roads/layer.sql

@@ -67,6 +67,7 @@ RETURNS TABLE(
     ) e on (e.way_id = road.way_id and (road.directionality != 0 or e.direction_reversed = r.rev))
 
     WHERE road.geometry && bbox
+      AND zoom_level >= 10
     GROUP BY
       road.name,
       road.way_id,

tile-generator/openbikesensor.yaml

@@ -3,6 +3,7 @@ tileset:
   layers:
     - layers/obs_events/obs_events.yaml
     - layers/obs_roads/obs_roads.yaml
+    - layers/obs_regions/obs_regions.yaml
   version: 0.7.0
   id: openbikesensor
   description: >