[GIS] Changing the name of layer using python

arcmaparcpylayers

I am attempting to change the name of the layer. The following code changes the name of the layer but then removes the layer from the map, and I am not sure why.

Note: I don't have any remove layer statements.

for lyrs in arcpy.mapping.ListLayers(mxd, "*", df):
    if lyrs.name == "project_ws":
        lyrs.name = "project_prow"

arcpy.RefreshTOC()
arcpy.RefreshActiveView()

Best Answer

You appear to be doing this in a geoprocessing tool. GP tools try to protect the TOC from manipulation (such as suppressing the outputs of tools called within tools from going to the TOC), so you're going to need to tell it explicitly that you mean to keep this layer around. "But I haven't added a layer!" -- it goes by name, not by reference, so as far as it's concerned "project_prow" is some new rogue layer.

Make a new output parameter of type Feature Layer, and use SetParameterAsText to set its value to the lyrs.name.

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ArcMap – How to Delete Layer Using Python

Do you want to actually delete the layer from the geodatabase or remove it from the mxd?

If you just want to remove the layer from your mxd, replace arcpy.Delete_management("CADAnnotation") with arcpy.mapping.RemoveLayer(df, lyr)

If you want to delete the data source you can do this.

for item in mxds:
   print (item)
   mxd = arcpy.mapping.MapDocument(item)
   df=arcpy.mapping.ListDataFrames(mxd,"Project Area")[0]
   for lyr in arcpy.mapping.ListLayers(mxd, "*",df):
      if lyr.name == "CADAnnotation":
         arcpy.mapping.RemoveLayer(df, lyr)
         print(lyr.dataSource)
         arcpy.Delete_management(lyr.dataSource)
         print("Layer Deleted")
      else:
         pass

[GIS] Getting the name of the mxd using python

Ok, I've figured it out. Thanks Luke for pointing out that file was already the file name. My other mistake was the brackets around the mxd version number. The final code is as follows.

import arcpy, os
#workspace to search for MXDs
Workspace = r"C:\Testing\ImageMapperReplacement\LRM157"
arcpy.env.workspace = Workspace
#list map documents in folder
mxdList = arcpy.ListFiles("*.mxd")
#set relative path setting for each MXD in list.
for mapdoc in mxdList:
    #set map document to change
    filePath = os.path.join(Workspace, mapdoc)
    mxd = arcpy.mapping.MapDocument(filePath)
    #Get the file name
    basename = mapdoc
    #set relative paths property
    mxd.relativePaths = False
    output = os.path.join(r"C:\Testing\ImageMapperReplacement\LRM157\mxd2", basename)
    #save map doucment change
    mxd.saveACopy (output, '10.0')

Best Answer

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[GIS] Getting the name of the mxd using python

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