topic Re: How to add feature layer created from graphicslayer to MapImageLayer in 4.x in ArcGIS JavaScript Maps SDK Questions

How to add feature layer created from graphicslayer to MapImageLayer in 4.x

LoriMcCormack1 — Tue, 26 Oct 2021 18:49:42 GMT

I want to add my graphics layer to the legend widget, so I created a feature layer (using the graphics layer as the source) and added it to the map. However, when I change the graphics layer based on a user's filter selection, the symbols don't change. So, I want to add the feature layer to my MapImageLayer for points I have in a map service.

Where can I find the reference for source: and datasource: within the sublayer definition?

I believe what I need to do is something like in esri's sample called layers-dynamicdatalayer-query-table. However, I want to reference my feature layer that I create on the fly each time the graphics layer changes.

Re: How to add feature layer created from graphicslayer to MapImageLayer in 4.x

LoriMcCormack1 — Mon, 01 Nov 2021 15:50:37 GMT

I found a hack.

1. To display the points when the user filters change (returning x,y values from a SQL Server search), I create a graphics layer and add to the map. The Legend widget cannot use graphics layers.

2. To display the legend with my point symbols, I create a FeatureLayer with a renderer and use the graphics layer as the source, but I use a definition expression to exclude the point features from being shown on the map. The reason I cannot use the FeatureLayer in the map is because the values (point features) won't change after the first time the source is defined.

I am using ArcGIS API for JavaScript version 4.14.