topic Re: JimuMapView will not zoom in ArcGIS JavaScript Maps SDK Questions

JimuMapView will not zoom

AngelaSchirck — Fri, 17 May 2024 12:23:06 GMT

Hi all,

I'm creating a widget and want it to zoom to a particular lat/lon. All functionality of the widgit works great except the zoom. It will pan to the point but not zoom in no matter what zoom level I put. There are no zoom restrictions on the map itself, whatever zoom level the map is in, it stays at and pans to the point. I've tried several different ways to do this, here is my latest relevant code. Here mapViewRef refers to a JimuMapView instance.

```

const searchAndZoomToLocation = () => {

if (mapViewRef.current && inputLatitude && inputLongitude) {

const lat = parseFloat(inputLatitude);

const lon = parseFloat(inputLongitude);

if (!isNaN(lat) && !isNaN(lon)) {

// Add point to the specified location

const point = new Point({

longitude: lon,

latitude: lat

});

const pointGraphic = new Graphic({

geometry: point,

symbol: pointSymbol.current

});

mapViewRef.current.view.goTo({target: point, zoom: 14}); // Zoom to point

mapViewRef.current.view.graphics.removeAll(); // Remove existing graphics

mapViewRef.current.view.graphics.add(pointGraphic);

}

```

Any ideas why this only pans and doesn't zoom? What ever number I set zoom to, it doesn't change the result.

Re: JimuMapView will not zoom

emreaktas1 — Mon, 20 May 2024 06:10:09 GMT

specific zoom and you can place the map within specific geographic coordinates

const view = new MapView({

container: "viewDiv",

map: map,

center: [latitude ,longitude ],

zoom: 12,

constraints: {

geometry: {

type: "extent",

xmin: 3269655.5200,

ymin: 4780511.2100,

xmax: 3296867.1000,

ymax: 4810818.4900,

spatialReference: {

wkid: 102100

minZoom: 11,

maxZoom:20,

rotationEnabled:false,

}

});

Re: JimuMapView will not zoom

AngelaSchirck — Mon, 20 May 2024 12:25:33 GMT

Thanks, but didn't help, still panning not zooming.

Re: JimuMapView will not zoom

emreaktas1 — Mon, 20 May 2024 12:42:15 GMT

Hello
How can I get the entered text value with searchWidget?

Re: JimuMapView will not zoom

JeffreyThompson2 — Mon, 20 May 2024 14:02:39 GMT

Have you tried re-ordering your functions? See what happens if you call goTo() after the add().

Re: JimuMapView will not zoom

emreaktas1 — Mon, 20 May 2024 14:11:54 GMT

Hİ @JeffreyThompson2

Hello
How can I get the entered text value with searchWidget?

Re: JimuMapView will not zoom

AngelaSchirck — Mon, 20 May 2024 14:28:01 GMT

Hi,

Yes, I also recently tried "goTo" THEN zoom but it STILL won't zoom:

const searchAndZoomToLocation = () => {

if (mapViewRef.current && inputLatitude && inputLongitude) {

const lat = parseFloat(inputLatitude);

const lon = parseFloat(inputLongitude);

if (!isNaN(lat) && !isNaN(lon) && isValidCoordinate(lat, lon)) {

const point = new Point({

longitude: lon,

latitude: lat

});

const pointGraphic = new Graphic({

geometry: point,

symbol: pointSymbol.current

});

mapViewRef.current.view.graphics.removeAll();

mapViewRef.current.view.graphics.add(pointGraphic);

mapViewRef.current.view.goTo({ target: point }).then(() => {

mapViewRef.current.view.zoom = 14;

});

Re: JimuMapView will not zoom

AngelaSchirck — Mon, 20 May 2024 14:35:09 GMT

Your question is vague and not an answer to this post, please start a new thread with your question.

Re: JimuMapView will not zoom

JeffreyThompson2 — Mon, 20 May 2024 14:52:36 GMT

Is it possible your basemap does not have defined LODs (zoom levels)? What happens if you replace the zoom property with the scale property?

https://developers.arcgis.com/javascript/latest/api-reference/esri-views-MapView.html#GoToTarget2D

Re: JimuMapView will not zoom

AngelaSchirck — Mon, 20 May 2024 15:52:40 GMT

Okay, solved my own problem....

Instead of setting mapViewRef.current.view.zoom = 14; I used mapViewRef.current.view.scale = 1000; and it now zooms to the point.

Re: JimuMapView will not zoom

AngelaSchirck — Mon, 20 May 2024 15:54:16 GMT

Oh, wow, I actually did that and it worked, but I didn't see this post until after! Thanks!