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UpdateLayer Not Showing Changes in TOC or ActiveView

Question asked by jonmulder on Jun 5, 2014
Latest reply on Jun 6, 2014 by Wayne_Whitley

I've been wrestling with this for most of the day and am flummoxed!

I am going through a "For Loop" adding 5 (ultimately will be ~150 after testing) feature classes in a Feature Dataset (named "GroundwaterBasins") in a geodatabase, and trying to change the symbology for each dataset based upon a layer file that I have already saved ("PORSymbologyLayer").  I have inserted "arcpy.RefreshTOC" and "arcpy.RefreshActiveView".  I've even broken it down into two "For Loops (one for adding the
feature class, and one for changing the symbology).  I've even tried "ApplySymbologyFromLayer_mangement" which also doesn't change the symbology.

Can anyone see what I'm doing wrong?

Jonathan Mulder
Engineering Geologist
California Department of Water Resources

##Reference the Current map document. mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd)[0]  arcpy.env.workspace = os.path.join(GeoDatabaseNameAndLocation,"GroundwaterBasins") CurrentWorkspacePath = os.path.join(GeoDatabaseNameAndLocation,"GroundwaterBasins") PORSymbologyLayer = arcpy.mapping.Layer(os.path.join(GeoDatabaseLocation,"GIS","PeriodOfRecord.lyr")) arcpy.AddMessage(PORSymbologyLayer) BasinList = arcpy.ListFeatureClasses("*") arcpy.AddMessage(BasinList) for Basin in BasinList:     BasinFeatureClass = arcpy.mapping.Layer(Basin)     arcpy.AddMessage(BasinFeatureClass)     arcpy.mapping.AddLayer(df, BasinFeatureClass, "TOP")     arcpy.RefreshTOC()     arcpy.RefreshActiveView()  for Basin in BasinList:     BasinFeatureClass = arcpy.mapping.Layer(Basin) ##    arcpy.ApplySymbologyFromLayer_management (BasinFeatureClass, PORSymbologyLayer)     arcpy.mapping.UpdateLayer(df,BasinFeatureClass,PORSymbologyLayer)     arcpy.RefreshTOC()     arcpy.RefreshActiveView()