topic Need help with Python Map Algebra in Geoprocessing Questions https://community.esri.com/t5/geoprocessing-questions/need-help-with-python-map-algebra/m-p/369627#M12710 <HTML><HEAD></HEAD><BODY><SPAN>[INDENT]CatRaster = Int(CreateRandomRaster("#","100","0 0 10000 10000") * 5)</SPAN><BR /><SPAN>tmpRaster1 = IsNull(CatRaster)</SPAN><BR /><SPAN>tmpRaster2 = Con(CatRaster == 0,100,0)</SPAN><BR /><SPAN>tmpRaster3 = Con(tmpRaster1 == 1,0,tmpRaster2)[/INDENT]</SPAN><BR /><BR /><SPAN>Lines 1-3 above work, but the last one fails with the message:</SPAN><BR /><BR /><SPAN>[INDENT]RuntimeError: ERROR 000732: Input Raster: Dataset # does not exist or is not supported[/INDENT]</SPAN><BR /><BR /><SPAN>In desperation, I tried:</SPAN><BR /><BR /><SPAN>[INDENT]tmpRaster3 = Con(Raster(tmpRaster1) == 1,0,Raster(tmpRaster2))[/INDENT]</SPAN><BR /><BR /><SPAN>but, I was disappointed again:</SPAN><BR /><BR /><SPAN>[INDENT]TypeError: expected a raster or layer name[/INDENT]</SPAN><BR /><BR /><BR /><SPAN>Any ideas?</SPAN><BR /><BR /><SPAN>ArcGIS Pre-Release 10.0.0.2348</SPAN></BODY></HTML> Sat, 08 May 2010 23:36:49 GMT curtvprice 2010-05-08T23:36:49Z Need help with Python Map Algebra https://community.esri.com/t5/geoprocessing-questions/need-help-with-python-map-algebra/m-p/369627#M12710 <HTML><HEAD></HEAD><BODY><SPAN>[INDENT]CatRaster = Int(CreateRandomRaster("#","100","0 0 10000 10000") * 5)</SPAN><BR /><SPAN>tmpRaster1 = IsNull(CatRaster)</SPAN><BR /><SPAN>tmpRaster2 = Con(CatRaster == 0,100,0)</SPAN><BR /><SPAN>tmpRaster3 = Con(tmpRaster1 == 1,0,tmpRaster2)[/INDENT]</SPAN><BR /><BR /><SPAN>Lines 1-3 above work, but the last one fails with the message:</SPAN><BR /><BR /><SPAN>[INDENT]RuntimeError: ERROR 000732: Input Raster: Dataset # does not exist or is not supported[/INDENT]</SPAN><BR /><BR /><SPAN>In desperation, I tried:</SPAN><BR /><BR /><SPAN>[INDENT]tmpRaster3 = Con(Raster(tmpRaster1) == 1,0,Raster(tmpRaster2))[/INDENT]</SPAN><BR /><BR /><SPAN>but, I was disappointed again:</SPAN><BR /><BR /><SPAN>[INDENT]TypeError: expected a raster or layer name[/INDENT]</SPAN><BR /><BR /><BR /><SPAN>Any ideas?</SPAN><BR /><BR /><SPAN>ArcGIS Pre-Release 10.0.0.2348</SPAN></BODY></HTML> Sat, 08 May 2010 23:36:49 GMT https://community.esri.com/t5/geoprocessing-questions/need-help-with-python-map-algebra/m-p/369627#M12710 curtvprice 2010-05-08T23:36:49Z