Filter ArcGISDynamicMapServiceLayer to get Imges

HenryKo2

Hi, I have a points ArcGISDynamicMapServiceLayer. In my JavaScript API code, is it possible to generate map images by using a geometry (such as a polygon) to intersect with the points?

What I want is to have a polygon as an input geometry, then get the intersecting points back as images - not features/graphics (so using a QueryTask or feature service will not satisfy the requirement). I want images and not graphics/features as potentially there could be almost millions of points.

I know you can use layer definitions on ArcGISDynamicMapServiceLayer but it is essentially a textual where-clause, not a geometry. I am hoping for something like this:

var myMapService = new ArcGISDynamicMapServiceLayer(url, {...});

myMapService.setLayerDefinitionWithGeometry(new Polygon(...)); // Similar to setLayerDefinition() but with geometry.

I am using JavaScript API 3.22 with ArcGIS for Server 10.6.

RobertScheitlin__GISP

Henry,

   No there is no such ability as setting the definition expression by a geometry. But one way to do this is to use the geometry in QueryTask to query for object Ids and then use that to set the layers definition expression. If you are sometimes expecting a million results then you will have to consider the inverse of the queries where clause.