topic Re: return layer symbol url in ArcGIS JavaScript Maps SDK Questions

return layer symbol url

KevinDunlop — Wed, 09 Feb 2022 18:02:55 GMT

Hi,

I am looking for a method that gets the FeatureLayer symbol URL either from the Feature Service itself or the FeatureLayer. My goal is to use that url to change the src on a <img> value that I use in a different part of my web application. I haven't been able to find a Javascript 4.x method that returns this.

Can anyone point me in the right direction

const VBA = new FeatureLayer({ url: "https://gis.va.gov/server/rest/services/PROJECTS/VBA_VHA_NCA_Regional_and_Major_Facilities/FeatureServer/0", title: "VBA" }); document.getElementById("VBA_Img").src=VBA.renderer.symbol.url;

VBA<img id="VBA_Img" />

Re: return layer symbol url

ReneRubalcava — Wed, 09 Feb 2022 18:58:30 GMT

You can use symbolUtils.renderPreviewHTML for something like this.

https://developers.arcgis.com/javascript/latest/api-reference/esri-symbols-support-symbolUtils.html#renderPreviewHTML

Re: return layer symbol url

KevinDunlop — Mon, 14 Feb 2022 21:28:18 GMT

Hi,

Thanks for the advise but it didn't work. It also made it so the LayerList no longer can toggle the visibility of it. Any suggestions?

const VBA = new FeatureLayer({ url: "https://cdw.maps.va.gov/server/rest/services/Map/FeatureServer/6", visible: true }); map.add(VBA); const VBAsymbol = VBA.renderer.symbol.clone(); symbolUtils.renderPreviewHTML(VBAsymbol, { node: document.getElementById("VBA_Img"), size: 8 });

VBA Regional Offices<img id="VBA_Img" />

Thanks

Re: return layer symbol url

ReneRubalcava — Mon, 14 Feb 2022 22:04:53 GMT

You may have to wait for the view or layer to be finished. Also make sure it's an image, and not svg, depending on how it was created. This sample works grabs the layer and iterates the uniqueValueInfos

https://codepen.io/odoe/pen/rNYGjVg?editors=1000