Ajout de la fonctionnalité de clic et de zoom

Question

J'ai l'application suivante (ICGC WEB PORTAL)   En fonction du bouton cliqué en haut, certains pays sont mis en surbrillance, j'ai besoin d'aide pour ce qui suit :

Je veux faire un panoramique vers (?) / centrer sur le pays cliqué ainsi qu'augmenter le niveau de zoom.

Ceci est ma tentative

function getExtent(){

var lat = map.getCenter().lat;

var lng = map.getCenter().lng;

var newCord = [lat, lng];

return newCord;

}

function highlightFeature(e){

var newCenter = getExtent(); <--

var layer = e.target

[éléments omis]

}

function onEachFeature(feature, layer){

layer.on({

click: highlightFeature

});

}

countries = L.geoJson(featureCollection, {

onEachFeature: onEachFeature

}).addTo(map);

Script joint

JohnGravois · Accepted Answer

the easiest thing to do would just be to listen for the 'click' event of your featureLayer and use that opportunity to retrieve its bounds and pass them to the map.

featureLayer.on('click', function(evt) {
    // http://leafletjs.com/reference.html#featuregroup-getbounds
    var bounds = evt.layer.getBounds()
    // http://leafletjs.com/reference.html#map-fitbounds
    map.fitBounds(bounds);
});

this is possible because 'L.esri.FeatureLayer' extends 'L.geoJson' and 'L.geoJson' extends 'L.featureGroup', which has a method 'getBounds()'.  you can find a working example here.

between all the inheritance and the fact that the documentation for Esri Leaflet and Leaflet itself are in two different places, stuff like this can be confusing until you get the hang of it.