topic Re: Apply Changes to Mapview in Python Questions

Apply Changes to Mapview

ChrisHolmes — Thu, 11 Feb 2021 21:23:17 GMT

Hello,

I have the following procedure which turns layers on or off on a mapview. But I find that the changes only apply if I save the project but I find saving the project adds alot of time onto the execution of the script. Is there something different I can do, possibly some way that will just update the mapview where the layers have been turned on/off?

Thanks!

def SetLayers(prj, mapName, lyrs, status): aprx = arcpy.mp.ArcGISProject(prj) m = aprx.listMaps(mapName)[0] for lyr in m.listLayers(): if lyr.name.upper() in lyrs: if status == 'on': lyr.visible = True else: lyr.visible = False aprx.save() del aprx

Re: Apply Changes to Mapview

MatthewDriscoll — Thu, 11 Feb 2021 22:11:01 GMT

Unfortunately they took away the refreshActiveView option in pro. If possible use CURRENT for the map.

https://pro.arcgis.com/en/pro-app/latest/arcpy/mapping/migratingfrom10xarcpymapping.htm

The application always refreshes when using CURRENT

When you use the CURRENT keyword in the Python window with ArcGIS Desktop, you sometimes had to call refreshActiveView to force a screen refresh. This is no longer the case with ArcGIS Pro. All arcpy.mp API changes directly update ArcGIS Pro."

Re: Apply Changes to Mapview

ChrisHolmes — Tue, 16 Feb 2021 17:15:39 GMT

That is completely correct and actually I remember reading this link in the past. SetLayers is used to turn layers on/off before running a procedure to create images. As a test I ran it how it currently works (using a passed in path to a project), I set it to create 4 images but killed the script after 12 minutes and having created 2 of the images.

I then changed my code to use 'CURRENT', reran the test and it created all 4 images in 35 seconds!

Thanks for the reminder. 🙂

Re: Apply Changes to Mapview

ChrisHolmes — Tue, 16 Feb 2021 17:19:17 GMT

I'm assuming though if there is a need to save the project at the end of a script that works with 'CURRENT', you will still need to do a .save()?