topic renderer for graphicslayer not working? in ArcGIS JavaScript Maps SDK Questions

renderer for graphicslayer not working?

EvanBossett — Fri, 07 Feb 2014 16:09:16 GMT

I am trying to add a renderer to a graphicslayer. My graphics layer shows up fine and i can control the symbology manually (If i change the symbol color, it changes,etc.)

However, if i create a renderer and add it to the layer, the "default" symbology is still retained.

Please help.

Thank you.

//CODE
symbol1 = new esri.symbol.SimpleFillSymbol().setColor(new dojo.Color([255, 0, 0,0.5]))
gl = new esri.layers.GraphicsLayer();

var attr = {"MY_VALUE":5}
gl.add(
         new esri.Graphic(
         new esri.geometry.Point(-75.03810508573053, 40.26871269474917),
         symbolX,
         attr
   )
)

map.addLayer(gl);

renderer1 = new esri.renderer.ClassBreaksRenderer(symbol1, "MY_VALUE");
renderer1.addBreak(0,3,new esri.symbol.SimpleFillSymbol().setColor(new dojo.Color([255, 0, 0,0.5])));
renderer1.addBreak(4,7,new esri.symbol.SimpleFillSymbol().setColor(new dojo.Color([0, 255, 0,0.5])));
renderer1.addBreak(8,Infinity,new esri.symbol.SimpleFillSymbol().setColor(new dojo.Color([0,0,255,0.5])));

gl.setRenderer(renderer1)

Re: renderer for graphicslayer not working?

TyroneLigon — Fri, 07 Feb 2014 16:56:41 GMT

If I'm reading this correctly, you want to use the renderer symbology but the symbol you're adding to the graphic is what's being drawn. If that's the case, try using 'null' as your symbol value in the graphic constructor.

Re: renderer for graphicslayer not working?

EvanBossett — Fri, 07 Feb 2014 17:45:26 GMT

I appreciate the prompt response.
You understand my problem correctly.

however, it is worse

graphics drawn using the following show up (but do not have a renderer) :

map.graphics.add(g);

however, my graphicslayer is not showing up (even when I remove the renderer).
I did include code:

gl.visible=true;

any help would be appreciated.

thank you.

Re: renderer for graphicslayer not working?

AllenHuang — Thu, 08 Aug 2024 11:49:27 GMT

if you look at the API
https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-GraphicsLayer.html#methods-summary

There is no renderer parameter for GraphicsLayer. You would have to control each symbol in your GraphicsLayer separately.