Import symbology from layer - arcpy

Question

Hello! I am trying to update the symbology of a raste layer using an existing layer file with 2 different functions: - update layer - apply symbology from layer The same function works with shapefiles, though. Nothing happens, still the code runs till the end with no error message, which makes it pretty difficult to find the error. import arcpy arcpy.env.overwriteOutput = True workDir = 'C:/0.STUDY PROJECT/Maps/' mxd = arcpy.mapping.MapDocument(template) dfs = arcpy.mapping.ListDataFrames(mxd) df = dfs[0] # clip is obtained interpolating a point shapefile with natural neighbours method and clipped with a polygon shapefile clip = "C:\0.STUDY PROJECT\MapsKulmbach\processed_data\clip" depth_data = arcpy.mapping.Layer(clip) arcpy.mapping.AddLayer(df, depth_data) srcLay = workDir + "depthSymbology.lyr" srcLayObj = arcpy.mapping.Layer(srcLay) # try function 1 arcpy.mapping.UpdateLayer(df, depth_data, srcLayObj, True) # try function 2 arcpy.ApplySymbologyFromLayer_management (depth_data, srcLayObj) mxd.save() arcpy.RefreshActiveView()‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Do you know what a reason could be? Thank you

martinaraffellini · Answer

no, it is a single raster. I have to put it in a loop later, but now i am trying one step

JimCousins · Answer

I have not tested it with tins, but for shapefiles and rasters I use it often. I usually configure in model builder, but have populated a for loop in python to apply the symbology to a set of files as well. To do this, I get a list of layers in a map, and loop through them 1 at a time to apply the symbology. You could also define a function and pass the srcLay object and the data object.

My concern is still with the object “data”. Is it a single raster or is it a list? If it is a list, you need to work with them 1 at a time inside a loop.

Regards,

Jim

martinaraffellini · Answer

Thank you for your reply.

The whole code is too long but i can add a few lines in the script above.

Does your code work with shapefiles, rasters, TIN and layerfiles?

I can manage only with shp