topic Re: Get the layer ID within a map with Python in ArcGIS Pro Questions

Get the layer ID within a map with Python

FrancisMoisan1 — Mon, 11 Jul 2022 17:39:38 GMT

Hi!, I need to get the layer id within a map in ArcGIS Pro. It need to be done with Python, but can't find the way to do it. Any idea ? Impossible ?

HannesZiegler — Fri, 12 Aug 2022 15:04:13 GMT

Take a look at arcpy.mp, I think this gets you what you want:

aprx = arcpy.mp.ArcGISProject("CURRENT") m = aprx.listMaps()[0] lyrs = m.listLayers() [(i, lyr.name) for i, lyr in enumerate(lyrs)]

returns

[(0, 'TestLine'), (1, 'TestPoint'), (2, 'TestPoint_Raster'), (3, 'TestPoly'), (4, 'TestPoint'), (5, 'World Topographic Map'), (6, 'World Hillshade')]

FrancisMoisan1 — Tue, 16 Aug 2022 14:57:36 GMT

Thanks for the info, but that "id" is just the order within the project. I look to get the ID that is attached to the layer within the properties.

HannesZiegler — Wed, 17 Aug 2022 14:56:58 GMT

Ah I see, yes you can get that:

aprx = arcpy.mp.ArcGISProject("CURRENT") m = aprx.listMaps()[0] lyrs = m.listLayers() for lyr in lyrs: print(lyr.getDefinition("V3").serviceLayerID)

Have a look at CIM access, it's quite useful, there is much more you can do with it besides this

FrancisMoisan1 — Fri, 19 Aug 2022 20:08:59 GMT

That was it! thanks!