![]() I don't see why this is necessary in this script but I put in some extent and cell size statements anyway. If Extent is specified in the environment setting and the lower-left corner of the output extent does not match any cell corner of the input raster, during processing, a shift of the cell alignment of the input raster will occur to match the specified extent. See the Related Information section to download this pack.If a shapefile is used as a mask for an analysis operation, an error, 'The cell size value is either invalid or not defined', is returned when using the Raster Calculator. If the capitalization is incorrect, the expression will be invalid and fail to execute because Python is case sensitive. 05-11-2012 07:22 AM by GerryGabrisch Occasional Contributor III My Python code throws an error at the first raster calculator statement claiming that no cell size or extent are set. X File ?C:\Python27\ArcGIS10.1\Lib\warnings.py?, line29, in_show_warningfile. This problem is addressed in ArcGIS 8.1 Service Pack 1. ![]() The input raster is integer, but float rasters are not working for me either.Įxecuting: Raster Calculator ?R31107_G2I? * 3? C:\GIS_Data\DEM\NM\test02 The output raster, test02 does not exist yet (I tried pre-creating it, but that didn't work, either). And yes, I have a license for Spatial Analyst, but I seldom use it, so its quite possible that I am doing something obviously wrong. For example, to run a Cos on a raster you would use something similar as below: import arcpy from arcpy import env from arcpy.sa import env.workspace 'C:/sapyexamples/data' outCos Cos ('degs') outCos.save ('C:/sapyexamples/output. For specific Python issues, consult the external Python help for the version of Python you're using, or consult the Calculate Field or Calculate Value help for more information on these tools. save ( "C:/sapyexamples/output/outminus.When I try to use the raster calculator (in ArcToolBox or as a command tool), I get a runtime error. When using Map Algebra with Python, you will need to perform the raster calculations a little different. write an answer to Cause of ArcGIS Raster Calculator Parsing error : invalid syntax. ![]() You might prefer to try using map algebra instead. ![]() CheckOutExtension ( "Spatial" ) # Execute Minus outMinus = Minus ( inRaster1, inRaster2 ) # Save the output outMinus. Raster calculator arcgis pro You should be able to nest you raster. Is it possible that you have called a raster calculator operation from model builder via a python script, or directly from python In that case the next link might be useful, as it seems that arcmap cant preform raster calculator called from a python script. ![]() Its a very flexible and versatile algorithm that can be used for many. workspace = "C:/sapyexamples/data" # Set local variables inRaster1 = "degs" inRaster2 = "negs" # Check out the ArcGIS Spatial Analyst extension license arcpy. The raster calculator is one of the most powerful algorithms that you will find. # Name: Minus_Ex_02.py # Description: Subtracts the value of the second input raster from the # value of the first input raster on a cell-by-cell basis # Requirements: Spatial Analyst Extension # Import system modules import arcpy from arcpy import env from arcpy.sa import * # Set environment settings env. GIS: Troubleshooting ERROR 000989 Python syntax error from ArcGIS Field CalculatorHelpful Please support me on Patreon. ![]()
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