topic Re: Arcgis Pro 2.9 ArcPy Get Selected Feature in Python Questions

Arcgis Pro 2.9 ArcPy Get Selected Feature

YinghongLi1 — Tue, 03 May 2022 19:21:52 GMT

If a user selects a feature from the map by clicking, can I use Python to get this selected feature? I am from ArcObject and am learning ArcPy. From the reference document and samples, I have not found a way to get the selected feature from the map directly. I am wondering if ArcPy has classes/functions to interact with maps.

Thanks

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

BlakeTerhune — Tue, 03 May 2022 19:34:41 GMT

You'll want to get familiar with the arcpy.mp sub module. In general, you'll define a project, then identify a map in that project, then a layer in that map, then call the layer's getSelectionSet () method. This only gives you a list of objectId values for the selected features, not the actual feature. If you want access to the feature, use a data access cursor. Or, if you want to run a tool on the selected feature, you can usually just use the layer with the selection as the input and it will only run on the selection.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

YinghongLi1 — Tue, 03 May 2022 21:07:55 GMT

Thanks. I assume that there is no method that can get a map click point, right?

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

BlakeTerhune — Tue, 03 May 2022 21:44:08 GMT

Interesting question. If you were making a Python Toolbox, I think you could use a GPFeatureRecordSetLayer parameter. In the getParameterInfo function of the tool, you would create a feature class that outputs to a memory workspace, then make a feature layer from the feature class, and set the value of the GPFeatureRecordSetLayer parameter to the feature layer. This creates an input on the tool to draw a feature on the map.

I've seen this done in ArcMap, but not in ArcGIS Pro so the process might be slightly different.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

RhettZufelt — Wed, 04 May 2022 15:11:52 GMT

Not sure in Pro as I have not looked into Add Ins for Pro, but in ArcMap, getting the map click point was fairly simple using an Add In.

Good example here.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

YinghongLi1 — Wed, 04 May 2022 14:57:36 GMT

Thanks. Will take a look at the samples.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

YinghongLi1 — Wed, 04 May 2022 15:01:19 GMT

i got a message saying "can't be downloaded securely". Please help. Thanks...

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

RhettZufelt — Wed, 04 May 2022 15:13:15 GMT

Looks like that page hasn't been updated to https yet.

Here is the download link in https.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

YinghongLi1 — Wed, 04 May 2022 15:23:07 GMT

Thanks. I got the downloads.

It is an addin file so i can't check the source file. I need some Python code to guide my tool creation.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

RhettZufelt — Wed, 04 May 2022 15:37:33 GMT

Old ESRI add in's are just renamed zip files.

rename it with a .zip extension and you can get access to the files within.

Re: Arcgis Pro 2.9 ArcPy Get Selected Feature

YinghongLi1 — Wed, 04 May 2022 16:06:26 GMT

Thanks. I got it. I am going to take a look at it.