react-leaflet#GeoJSON JavaScript Examples
The following examples show how to use
react-leaflet#GeoJSON.
You can vote up the ones you like or vote down the ones you don't like,
and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
| Source File: ZipCodeGeoJson.js From landlord with MIT License | 6 votes |
|
function ZipCodeGeoJson({feature}) {
const map = useMap()
const pathOptions = {
weight: 2,
opacity: 1,
color: 'green',
fillOpacity: 0.1,
fillColor: 'transparent',
}
const resetHighlight = (e) => {
const layer = e.target;
layer.setStyle(pathOptions);
layer.unbindTooltip()
layer.bindTooltip(feature.properties.ZIP, {permanent: true, opacity: 0.5});
// layer.bindTooltip(feature.properties.ZIP, {className: 'normalTooltip', permanent: true, opacity: 0.5});
}
const highlight = (e) => {
const layer = e.target;
layer.setStyle({
fillOpacity: .5,
fillColor: 'yellow',
});
layer.unbindTooltip()
layer.bindTooltip(feature.properties.ZIP, {permanent: true, opacity: 1});
// layer.bindTooltip(feature.properties.ZIP, {className: 'highlightedTooltip', permanent: true, opacity: 1});
}
const zoomToFeature = (e) => {
map.fitBounds(e.target.getBounds());
}
return <GeoJSON key={feature.properties.ZIP}
data={feature} style={pathOptions}
eventHandlers={{
click: zoomToFeature,
mouseout: resetHighlight,
mouseover: (e) => highlight(e, feature.properties.ZIP)
}}>
<Tooltip permanent={true} opacity={.5}>{feature.properties.ZIP}</Tooltip>
</GeoJSON>
}
Example #2
| Source File: Map.js From india-maps with MIT License | 4 votes |
|
// to aggregate data by state+country and sum up metrics
export default function MapContainer(props) {
const {
setDashboardData,
setRootData,
setPan,
pan
} = props;
const [indiaData, setIndiaData] = useState(null);
const [stateData, setStateData] = useState(null);
const [countrySummary, setCountrySummary] = useState(null);
const [districtData, setDistrictData] = useState(null);
const [internationalData, setInternationalData] = useState([]);
const [countryStats, setCountryStats] = useState(null);
const [worldStats, setWorldStats] = useState(null);
const [viewTestCenters, setViewTestCenters] = useState(false);
const [showInfoHead, setShowInfoHead] = useState(true);
const [firstLoad, setFirstLoad] = useState(true);
const [mapPan, setMapPan] = useState(pan);
useEffect(()=>{
setMapPan(pan)
console.log("Pan: " + JSON.stringify(pan.geoJson))
},[pan])
useEffect(()=>{
setRootData({data: internationalData})
},[internationalData])
useEffect(() => {
fetch("https://stats.coronasafe.live/covid_data_json/kerala_covid_data.json")
.then(res => res.json())
.then(
result => {
console.log("Received Response" + result);
setDistrictData(result);
}
);
fetch("https://stats.coronasafe.live/covid_data_json/other_countries_covid_data.json")
.then(res => res.json())
.then(
result => {
setInternationalData(result.reduce((acc,cur) => {
return {
...acc,
[cur.Country]:{
geojson_feature: JSON.parse(cur.geo_json_feature.split("'").join("\"")),
confirmed: cur['Confirmed'],
deceased: cur['Deaths'],
recovered: cur['Recovered'],
active: cur['Active'],
latitude: cur['Lat'],
longitude: cur['Long_']
}
}
},{}));
}
);
}, []);
const findRadius = cases => {
return (Math.cbrt(cases)) * 1500
}
const geoJSONStyle = (feature) => {return {
color: '#FFFFFF',
weight: 1,
fillOpacity: 0.5,
fillColor: '#A73829',
}}
const renderTooltip = (feature) => {
return `Details Unavailable`
}
const onEachFeature = (feature, layer) => {
const tooltipChildren = renderTooltip(feature);
const popupContent = `<Popup> ${tooltipChildren} </Popup>`
layer.bindPopup(popupContent)
}
const focusLocation = (latlng) => {
const [closest,closestData] = findClosest(latlng, internationalData);
const newGeo = closestData.geojson_feature
setPan({geoJson:newGeo, location:closest})
setDashboardData({...closestData, name: closest})
}
return (
<Map
className="h-full w-full md:w-4/5 fixed"
center={mapPan.position}
zoom={mapPan.zoom}
minZoom={2}
maxBounds={[[-85,-180],[85,180]]}
onClick={e=>{focusLocation(e.latlng)}}
onMoveend={e=>{focusLocation(e.target.getCenter())}}
>
{
mapPan.geoJson &&
<GeoJSON
key={mapPan.location}
data={mapPan.geoJson}
style={geoJSONStyle}
onEachFeature={onEachFeature}
/>
}
<TileLayer
attribution='&copy <a href="https://carto.com">Carto</a>'
url="https://cartodb-basemaps-{s}.global.ssl.fastly.net/light_all/{z}/{x}/{y}.png"
/>
{districtData &&
Object.entries(districtData.data).map(([location,data]) =>
// console.log(location.state + "|" + JSON.stringify(indiaData.stateData[location.state]))
<Circle
key={location}
center={[data.latitude, data.longitude]}
fillColor="#d14f69"
fillOpacity={0.6}
stroke={false}
radius={15000 + findRadius(data.active)}
/>
)}
{Object.entries(internationalData).map(([country,location], index) => {
if (location.country_region === "India") {
if (countryStats === null) setCountryStats(location);
return null;
}
return (
<Circle
key={
country
}
center={{lat: location.latitude, lng: location.longitude}}
fillColor="#d14f69"
fillOpacity={0.6}
stroke={false}
radius={15000 + findRadius(location.confirmed)}
onMouseOver={e => {
e.target.openPopup();
}}
>
<Popup>
{country}
{location.confirmed}
{/* <h3>
{location.province_state
? location.province_state
: location.country_region}
</h3>
{location.province_state && (
<span>
{location.country_region}
<br />
</span>
)}
Cases: {location.confirmed}
Cured/Discharged: {location.recovered}
Deaths: {location.deaths}
<hr />
Last Update: {location.last_update}
<br /> */}
</Popup>
</Circle>
);
})}
{viewTestCenters &&
testCenters.map(testCenter => {
return (
<Marker
key={testCenter.institution}
position={[testCenter.latitude, testCenter.longitude]}
onMouseOver={e => {
e.target.openPopup();
}}
>
<Popup>
<h3>{testCenter.institution}</h3>
<a
href={
"https://www.google.com/maps/search/?api=1&query=" +
testCenter.institution +
"&query_place_id=" +
testCenter.place_id
}
target="_blank"
rel="noopener noreferrer"
>
Open in Maps
</a>
</Popup>
</Marker>
);
})}
</Map>
);
}
