Hi Raluca,
Thank you for looking into this. I'm glad to know that this issue is confirmed and will be fixed in the future. We are trying to change the map view to the extent of feature layer graphics that are shown.
Using this page as an example: every time when user select a different "Well Type", a query is performed, and only a subset of features will be shown as query result. We want the map view automatically "go to" the result features.
We've implemented a workaround queryExtent function:
function queryExtent(lyrView) {
var deferred = new Deferred();
lyrView.queryExtent().then(function(result) {
deferred.resolve(result);
}).catch(function() {
return lyrView.queryFeatures();
}).then(function(feature) {
var result = { count: 0, extent: null };
if (!feature || !feature.length)
return deferred.resolve(result);
var xMin = features[0].geometry.x,
xMax = xMin,
yMin = features[0].geometry.y,
yMax = yMin;
for (var feature of features) {
var x = feature.geometry.x,
y = feature.geometry.y;
if (x < xMin) xMin = x;
if (x > xMax) xMax = x;
if (y < yMin) yMin = y;
if (y > yMax) yMax = y;
}
require(['esri/geometry/Extent'], function(Extent) {
result.count = features.length;
result.extent = new Extent({
xMin: xMin,
xMax: xMax,
yMin: yMin,
yMax: yMax,
spatialReference:
features[0].geometry.spatialReference
});
deferred.resolve(result);
};
});
return deferred;
}
This function returns the same type of promise with lyrView.queryExtent function:
Returns:
| Type | Description |
|---|
| Promise<Object> | When resolved, returns the extent and count of the features that satisfy the input query. See the object specification table below for details.| Property | Type | Description |
|---|
| count | Number | The number of features that satisfy the input query. | | extent | Extent | The extent of the features that satisfy the query. |
|
