Group layers

[AlexGole1]

Is there a script that allows you to cycle through multiple group layers and turn on and off group layers one by one?
Thanks,
Alex

[JeffBarrette]

You can iterate through all layers and test for Layer.isGroupLayer.  If it returns false, set visible = False.

Jeff

[AlexGole1]

I tried using the following code to iterate through group layers but it seems like "isGroupLayer" is not an attribute (error message). I am a bit confused about this one. I am just trying to turn on a layer, export it as PDF.l

Thanks,
Alex

import arcpy, os
myPath    = r"K:\Working\Alex_Gole\Try\\"
arcpy.env.workspace = myPath
myMap = arcpy.mapping.MapDocument(myPath + "MyMap.mxd")
layer = arcpy.mapping.ListLayers(myMap)
vislayer = layer.isGroupLayer
df = arcpy.mapping.ListDataFrames(myMap)[0]
# Clear visibility of all layers except for the community areas layer
for lyr in vislayer:
    print "Turning on Layer " + lyr.name
    lyr.visible = True
else:
    print "Turning off layer " + lyr.name
    lyr.visible = False
#Export to PDF
    print "exporting map"
    arcpy.mapping.ExportToPDF(myMap, myPath + str(vislayer.name) + ".pdf")

[AlexGole1]

import arcpy, os, sys
path = os.path.dirname(sys.argv[0])
mxd = arcpy.mapping.MapDocument(path + r"/MyMap.mxd")
outputPath = r"K:\Working\Alex_Gole\Try"
mapLyr = arcpy.mapping.ListLayers(mxd)[0]

for lyr in mapLyr:
    if lyr.isGroupLayer:
        print "Turning on group Layer " + lyr.name
        lyr.visible = True
    else:
        lyr.visible = False

if os.path.exists(path + "layers.pdf"):
    os.remove(path + "layers.pdf")
arcpy.mapping.ExportToPDF(mxd, os.path.join(outputPath, lyr.name + "layers.pdf"))

I am trying with this script but it does  not seem like it returns anything.
Thanks,
Alex

[MichaelVolz]

Can you try removing the

if lyr.isGroupLayer:

and

else:

Then just try printing the lyr.name property to ensure that you are indeed looping through the layers.

[AlexGole1]

import arcpy, os
myPath = r"K:\Working\Alex_Gole\Try\\"
arcpy.env.workspace = myPath
myMap = arcpy.mapping.MapDocument(myPath + "MyMap.mxd")
layer = arcpy.mapping.ListLayers(myMap)
df = arcpy.mapping.ListDataFrames(myMap)[0]
# Clear visibility of all layers except for the community areas layer
for lyr in layer:
    if lyr.isGroupLayer:
        print "Turning on Layer " + lyr.name
        lyr.visible = True
    else:
        print "Turning off layer " + lyr.name
        lyr.visible = False
#Export to PDF
    print "exporting map"
    arcpy.mapping.ExportToPDF(myMap, myPath + str(lyr.name) + ".pdf")

Seems like this work. My only two worries here is that I dont see my legend being updated automatically and I dont see the name of the group layer as the PDF name when exported.

Can you try removing the

if lyr.isGroupLayer:

and

else:

Then just try printing the lyr.name property to ensure that you are indeed looping through the layers.

[JimCousins]

Alex,
In your first code entry, you alternate the slash and backslash for the map document concatenation.
For the legend update, you may need to do a refresh on the dataframe to show the changes.
For the myPath variable in your last entry, you have an additional "\" at the end.
Regards,
Jim

[MichaelVolz]

Are you looking to export to pdf while looping thru each layer or are you just trying to do an export to pdf for the group layer?

[AlexGole1]

Are you looking to export to pdf while looping thru each layer or are you just trying to do an export to pdf for the group layer?

I am looking to export each group layer as a separate PDF.

[MichaelVolz]

Seems to me that you should put the export to pdf statement in the GroupLayer true portion of the if else clause.  I would think it is currently exporting every layer out to a pdf since the export to pdf statement is outside the if else clause but within the for loop.