I am trying to remove layers from an ArcGIS Pro 1.1 project, but I receive a ValueError with the traceback of

File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\_mp.py", line 1280, in removeLayer
    return convertArcObjectToPythonObject(self._arc_object.removeLayer(*gp_fixargs((remove_layer,), True)))

Here is code to add raster layers from a geodatabase

rasters = arcpy.ListRasters("*",None)
aprx = arcpy.mp.ArcGISProject("Path/to/aprx")
aprxMap = aprx.listMaps("Map")[0]
for raster in rasters:
     raster = env.workspace + "\\" + raster

This successfully adds the raster objects as layers to the current map, but when I try to remove using the following code, I get an error.

for raster in rasters:

Any ideas why this is happening?

Raster is a string, and when I have tried to write as an input string, I still receive the error.


The removeLayer method is expecting a Layer object not the raster name as a string.

Try using the listLayers method on the map object. Then you could identify the raster name from the layer object and check it against your list of strings.

Something like:

layers = aprxMap.listLayers()
for layer in layers:    
    if layer.name in rasters:
  • This advice applies to other issues that I am having. The problem is that the python snippet one can export from the project displays the input as a string. It does not state that it is to be a pointer to an object. – user44796 May 15 '18 at 19:19

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