ColorVariable not working

MichaelWen_Timmons — Mon, 12 Dec 2022 19:34:12 GMT

I have a JS API 4x web application that uses a Feature Layer that is populated client-side by data coming from a web socket. I am trying to use the ColorExpression to vary the color on the symbol.

const colorExpression = `

var color = $feature.color;

var code = Decode(color, '#990000', 0, '#006600', 1, '#000000', 2);

return code;

breadcrumbRenderer.visualVariables = [{

type: "rotation",

field: "heading",

rotationType: "geographic"

},{

type: "color",

valueExpression: colorExpression,

stops: [

{ value: 0, color: "#990000"},

{ value: 1, color: "#006600"},

{ value: 2, color: "#000000"}

]

}]

The rotation variable works fine but the color variable is ignored, with everything showing up in the default color. If I use something like "0" for valueExpression then it would render in the 0 color, but for some reason my Arcade Expression is not recognized. Can someone help?

Re: ColorVariable not working

KristianEkenes — Mon, 12 Dec 2022 19:40:57 GMT

Your Arcade expression appears to be missing a default value in the Decode function. Add another param, like the number 3, or null so the expression can properly evaluate.

var code = Decode(color, '#990000', 0, '#006600', 1, '#000000', 2, null);

topic ColorVariable not working in ArcGIS JavaScript Maps SDK Questions

ColorVariable not working

Re: ColorVariable not working