This is working for me using nodejs/express.js for a rest api
app.get("/provinces", (req, res) => {
let raw = fs.readFileSync(
"/public/maps/limits_IT_provinces.geojson"
);
let geojson = JSON.parse(raw);
let properties = geojson.features.map((p) => p.properties);
return res.send(properties);
});
app.get("/provinces/:prov_istat_code_num", (req, res) => {
let geojson = fs.readFileSync(
"/public/maps/limits_IT_provinces.geojson"
);
let featureCollection = JSON.parse(geojson);
let prov_istat_code_num = req.params.prov_istat_code_num
let feature = featureCollection.features.filter(function (feature) {
return feature.properties.prov_istat_code_num === parseInt(prov_istat_code_num);
});
province = {};
province.type = "FeatureCollection";
province.bbox = [
6.62662136853768, 35.493691935511417, 18.52038159909892, 47.091783746462159,
];
province.features = feature;
return res.send(province);
});
using another geomap plugin: GitHub - orchestracities/map-panel: This plugin extends Grafana Geomap panel with several functionalities: Support for GeoJSON shapes, Support for icons, Support for pop up visualizations of data from a specific point, Multiple layers for the different queries.
