hello,
I have a question about Basemap - JS API 4.
My TileLayer has LODs 0 - 19. The last three LODs are empty (on purpose).
I create the Basemap and
1- The API v. 3 has a map of all LODs - I can also zoom into empty levels (0-19 LOD)
2 -The API v. 4.6 has a map of only non-empty levels (LOds)
When I use it in Basemap properties referenceLayers,it does not work. I have it again (0-16 LOD)
layer_for_DISPLAY = new TileLayer({
url: "http://xxxxx/MapServer",
id: "myID_1",
title: "myName_1"
});
/*LODs 0 - 19, last three LODs are empty */
layer_for_LODs = new TileLayer({
url: "http://yyyyyy/MapServer",
id: "myID_2",
title: "myName_2"
});
/*LODs 0 - 19, non empty LODs */
/* JS API 4 */
myBasemap = new Basemap({
baseLayers: [layer_for_DISPLAY],
referenceLayers: [layer_for_LODs],
title: "myNameBM",
id: "myIDBM",
thumbnailUrl: ""
});
Is it wrong?
The reason is that I after load (dynamic) MapImageLayer, which is displayed on all scale.
Thank you,
Zdenek Procner
Solved! Go to Solution.
Zedenek,
You can set the maps constraints lods property to contain the lods you want:
https://developers.arcgis.com/javascript/latest/api-reference/esri-views-MapView.html#constraints
Zedenek,
You can set the maps constraints lods property to contain the lods you want:
https://developers.arcgis.com/javascript/latest/api-reference/esri-views-MapView.html#constraints
Hello Robert,
You are right.
app.mapView.constraints.lods = layer_for_LODs.tileInfo.lods
It is interesting that layer "layer_for_DISPLAY" (TileLayer) only in empty Lods is behaving as MapImageLayer and it is rendered
Zdenek