topic get initialExtent instead of fullextent in ArcGIS JavaScript Maps SDK Questions

get initialExtent instead of fullextent

LionelGOUBET — Wed, 28 Aug 2024 10:33:24 GMT

I don't understand why the initial extent is not available to build a map on a MapImageLayer ? only fullextent is available

var mapImageLayer = new MapImageLayer({
url: "URL_DU_MAP_IMAGE_LAYER"
});

mapImageLayer.load().then(function() {
// Obtenir l'étendue initiale du MapImageLayer
var initialExtent = mapImageLayer.initialExtent;

console.log("Étendue initiale du MapImageLayer : ", initialExtent);

// Créer la vue de la carte en utilisant l'étendue initiale
var map = new Map({
basemap: "streets",
layers: [mapImageLayer]
});

var view = new MapView({
container: "viewDiv", // ID de l'élément HTML où la carte sera affichée
map: map,
extent: initialExtent
});
}).catch(function(error) {
console.error("Erreur lors du chargement du MapImageLayer : ", error);
});

the only solution is used the rest api with ?f=json

Thanks for your explanation

Re: get initialExtent instead of fullextent

JoelBennett — Wed, 28 Aug 2024 17:20:19 GMT

The MapImageLayer class doesn't expose an initialExtent property, but the value can still be retrieved from its sourceJSON property. See line 7 below, which also uses Extent.fromJSON:

Re: get initialExtent instead of fullextent

LionelGOUBET — Thu, 29 Aug 2024 06:44:25 GMT

Thanks Joel 😀

... I missed it 🙄