Is it possible to automate symbology in ArcGIS Online from a feature service that updates daily?

Question

I have a feature service on my server that will update its attribute data daily via  a python script and is published to AGOL. The Symbology is based on one field. is it possible to automate the symbology (even if its just random colors) as the attributes change? I'm using ArcGIS Server 10.2.2 with ArcGIS 10.5.

Thanks,

Michael

MichaelTorbett1 · Answer

Unfortunately I don't know much when it comes to javascript, but I see what you're saying. I'm going to play around with this and see if I can get it work.

Thanks Jordan.

JordanBaumgardner · Answer

Try it from the client:

geonet.esri.com/thread/183682-arcgis-javascript-how-to-layers-custom-field-value-rendering

// Key section of above link

var renderer = new ClassBreaksRenderer(null, "STATISTICS");
 renderer.addBreak(0, 10, new SimpleFillSymbol().setColor(new Color([56, 168, 0, 0.5])));
 renderer.addBreak(11, 30, new SimpleFillSymbol().setColor(new Color([139, 209, 0, 0.5])));
 renderer.addBreak(31, 50, new SimpleFillSymbol().setColor(new Color([255, 255, 0, 0.5])));
 renderer.addBreak(51, 90, new SimpleFillSymbol().setColor(new Color([255, 128, 0, 0.5])));
 renderer.addBreak(91, Infinity, new SimpleFillSymbol().setColor(new Color([255, 0, 0, 0.5])));

layer.setRenderer(renderer);
 layer.redraw();

MichaelTorbett1 · Answer

Jordan and Juan,

Thank you for your replies.

I've created a  web map for my agency showing the counties in Georgia with the "Forester" assigned to that county in the attribute table. The Symbology is color coated  by "Forester". What I want is that when a new forester gets hired and put into the attribute table, the symbology automatically adjust for that.

The setup is, newly hired forester gets added to a sql server table. Using model builder, I then take that table, join it to a  county feature class (that's stored on a GIS Server and published as a feature service) , and use 'field calculator' to add the foresters to that feature class. I plan to export this model as a script and schedule it to run once a day.

I tried publishing the service with the unique values based on the attribute field. however AGOL is not automatically recognizing any changes through the symbology.

Any advice is greatly appreciated.