topic Re: Unexpected Behavior with arcpy.addDataFromPath in Python Questions

Unexpected Behavior with arcpy.addDataFromPath

Arne_Gelfert — Thu, 19 Nov 2020 18:46:51 GMT

Working on a work-around for another conundrum and tried the following:

import arcpy x = some X y = some Y point = arcpy.Point(x,y) ptGeometry = arcpy.PointGeometry(point) feature_class = arcpy.CreateFeatureclass_management("in_memory", "tempfc", "POINT")[0] with arcpy.da.InsertCursor(feature_class, ["SHAPE@XY"]) as cursor: cursor.insertRow(ptGeometry) aprx = arcpy.mp.ArcGISProject("CURRENT") symbologyLayer = r"<some path>...\someSymbology.lyrx" arcpy.management.ApplySymbologyFromLayer(feature_class,symbologyLayer) # Interestingly, the following works too #arcpy.ApplySymbologyFromLayer_management(feature_class,symbologyLayer) map = aprx.listMaps()[0] map.addDataFromPath(feature_class) ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

So this works great in that I'm getting a symbol plotted where I needed. But it does that three (3) times giving me the following output.

Now, I realize I could try and control the place of insertion by using addLayer() and using the LYRX file directly after updating its data source. But the above output is not what I would expect based on what I'm doing. What's going on there?

Re: Unexpected Behavior with arcpy.addDataFromPath

JoshuaBixby — Sun, 12 Dec 2021 04:58:09 GMT

Regarding these lines:

arcpy.management.ApplySymbologyFromLayer(feature_class,symbologyLayer)

# Interestingly, the following works too
#arcpy.ApplySymbologyFromLayer_management(feature_class,symbologyLayer)‍‍‍‍

Line #01 and Line #04 call the exact same geoprocessing tool, so you should expect them to both work. Line #01 represents the new syntax that Esri is pushing with Pro while Line #04 represents the original/legacy syntax.

The default for arcpy.env.addOutputsToMap is True, and I am guessing you are using the defaults, so lines #10, #18, and #24 in your code snippet will all add layers to the TOC, which is what you are seeing.

Re: Unexpected Behavior with arcpy.addDataFromPath

DanPatterson — Sun, 12 Dec 2021 04:58:13 GMT

C:\....Your_Install_path...\Resources\ArcPy\arcpy\management.py

arcpy.management.ApplySymbologyFromLayer.__esri_toolname__
'ApplySymbologyFromLayer_management'

arcpy.management.ApplySymbologyFromLayer.__module__
'arcpy.management'

# ---- same
arcpy.ApplySymbologyFromLayer_management.__esri_toolname__
'ApplySymbologyFromLayer_management'

arcpy.ApplySymbologyFromLayer_management.__module__
'arcpy.management'

# ---- and finally

arcpy.management.ApplySymbologyFromLayer.__code__

<code object ApplySymbologyFromLayer at 0x00000158E26CDA50, file

"C:\arc_pro\Resources\ArcPy\arcpy\management.py", line 8520>

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Lots to explore in those folders, especially the new toolbox structure

C:\....Your_Install_path...\Resources\ArcToolBox\toolboxes\Data Management Tools.tbx\ApplySymbologyFromLayer.tool

Re: Unexpected Behavior with arcpy.addDataFromPath

Arne_Gelfert — Tue, 10 Nov 2020 13:14:46 GMT

I was beginning to wonder something like this... whether some "actions" are implied. Glad you bring

arcpy.env.addOutputsToMap

to my attention. Will take a look. Thanks!

Re: Unexpected Behavior with arcpy.addDataFromPath

Arne_Gelfert — Tue, 10 Nov 2020 13:16:35 GMT

Good stuff, Dan. This wasn't the first time I got close to sifting through those folders. But I'll be back to the JSAPI tomorrow, so I'm doomed to a life of limited understahding!

Re: Unexpected Behavior with arcpy.addDataFromPath

Arne_Gelfert — Tue, 10 Nov 2020 13:21:52 GMT

On second though, this might explain why the behavior is even different as part of a geoprocessing service... maybe server Python/arcpy has different environmental settings by defaul? I will have to look at that, too.