topic arcpy.RasterToPolygon works, but tool errors... in Python Questions

arcpy.RasterToPolygon works, but tool errors...

MatthewBarlow — Fri, 07 Feb 2014 12:53:54 GMT

I am having problems with:

arcpy.RasterToPolygon_conversion(inRaster, outPolygons, "NO_SIMPLIFY")

It returns the following error message even though it is successfully creating the polygon dataset:

ExecuteError: ERROR 010157: Unable to open feature class

I can view the polygon output and it is exactly as expected. However, the code fails at this point and returns the error. Any thoughts?

Re: arcpy.RasterToPolygon works, but tool errors...

JakeSkinner — Sat, 11 Dec 2021 18:35:57 GMT

Hi Matt,

Not sure what is causing the error (may need to contact Tech Support), but you can continue to execute the rest of your script using a try/except. Ex:

try:
    arcpy.RasterToPolygon_conversion(inRaster, outPolygons, "NO_SIMPLIFY")
except ExecuteError:
    pass

Re: arcpy.RasterToPolygon works, but tool errors...

MatthewBarlow — Sat, 11 Dec 2021 18:35:59 GMT

Hi Matt,

Not sure what is causing the error (may need to contact Tech Support), but you can continue to execute the rest of your script using a try/except. Ex:
try:
    arcpy.RasterToPolygon_conversion(inRaster, outPolygons, "NO_SIMPLIFY")
except ExecuteError:
    pass

Hi Jake,

I was thinking I may need to do this exactly... contact Tech Support & pass the error. I will implement your suggestion and raise a support call.

Many thanks,
Matt