Weighted Overlay Table Invalid Class

JacobSpear1 · ‎11-19-2022

I'm trying to run a weighted overlay on two separate integer rasters. I built the original overlay model in arcpro and exported the tool as script. I then modified the script to fit the syntax as shown on the ESRI help pages. Now when I run the script I receive (Unspecified error Class not registered). The landcover and slopeint classes reference existing raster files in the environment gdb. I have cropped out the middle portion of the script that prepares the rasters.

What did I do wrong?

#Import modules
import arcpy
from arcpy.sa import *
from sys import argv

LandCover = "LandCover"
slopeint = "slopeint"

intable = WOTable([[slopeint, 50, "Value", RemapValue([[0, 3], [1, 3], [2, 3], [3, 3], [4, 3], [5, 3], [6, 3], [7, 3], [8, 3], [9, 3], [10, 3], [11, 3], [12, 3], [13, 2], [14, 2], [15, 1], [16, 'Restricted'], [17, 'Restricted'], [18, 'Restricted'], [19, 'Restricted'], [21, 'Restricted'], [22, 'Restricted'], [23, 'Restricted'], [24, 'Restricted'], ["NODATA", "NODATA"]])], 
                     [LandCover, 50, "Class", RemapValue([['Open Water', 'Restricted'], ['Perennial Snow/Ice', 1], ['Developed, Open Space', 3], ['Developed, Low Intensity', 2], ['Developed, Medium Intensity', 1], ['Developed, High Intensity', 'Restricted'], ['Barren Land', 3], ['Deciduous Forest', 'Restricted'], ['Evergreen Forest', 'Restricted'], ['Mixed Forest', 'Restricted'], ['Shrub/Scrub', 2], ['Herbaceuous', 2], ['Hay/Pasture', 3], ['Cultivated Crops', 3], ['Woody Wetlands', 'Restricted'], ['Emergent Herbaceuous Wetlands', 'Restricted'], ['NODATA', 'NODATA']])]], 
                    [1, 3, 1])
helicoptersuitability = WeightedOverlay(intable)
helicoptersuitability.save("helicoptersuitability")

Error Message:

Traceback (most recent call last):
File "D:\Documents\School\USC\586\586_Project_5\Project_5\SiteSuitability.py", line 78, in <module>
helicoptersuitability = WeightedOverlay(intable)
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\sa\Functions.py", line 10452, in WeightedOverlay
return Wrapper(
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\sa\Utils.py", line 55, in swapper
result = wrapper(*args, **kwargs)
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\sa\Functions.py", line 10449, in Wrapper
result = arcpy.sa.Apply(rasters, "WeightedOverlay", args)
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\ia\_ia.py", line 135, in Apply
return arcgisscripting._ia.Apply(in_raster=in_raster,
RuntimeError: Failed to apply Raster Function: 'WeightedOverlay' (Unspecified error
Class not registered

DanPatterson · ‎11-19-2022

reformatting the WOTable to make it easier to see what looks off.

for slopeint ... not class 20?

([[slopeint, 50, "Value",
  RemapValue([[0, 3],
              [1, 3],
			  [2, 3],
			  [3, 3],
			  [4, 3],
			  [5, 3],
			  [6, 3],
			  [7, 3],
			  [8, 3],
			  [9, 3],
			  [10, 3],
			  [11, 3],
			  [12, 3],
			  [13, 2],
			  [14, 2],
			  [15, 1],
			  [16, 'Restricted'],
			  [17, 'Restricted'],
			  [18, 'Restricted'],
			  [19, 'Restricted'],
			  [21, 'Restricted'],
			  [22, 'Restricted'],
			  [23, 'Restricted'],
			  [24, 'Restricted'],
			  ["NODATA", "NODATA"]])], 
  [LandCover, 50, "Class",
  RemapValue([['Open Water', 'Restricted'],
              ['Perennial Snow/Ice', 1],
			  ['Developed, Open Space', 3],
			  ['Developed, Low Intensity', 2],
			  ['Developed, Medium Intensity', 1],
			  ['Developed, High Intensity', 'Restricted'],
			  ['Barren Land', 3],
			  ['Deciduous Forest', 'Restricted'],
			  ['Evergreen Forest', 'Restricted'],
			  ['Mixed Forest', 'Restricted'],
			  ['Shrub/Scrub', 2],
			  ['Herbaceuous', 2],
			  ['Hay/Pasture', 3],
			  ['Cultivated Crops', 3],
			  ['Woody Wetlands', 'Restricted'],
			  ['Emergent Herbaceuous Wetlands',
			  'Restricted'],
			  ['NODATA', 'NODATA']])]], 
   [1, 3, 1])

... sort of retired...

JacobSpear1 · ‎11-19-2022

I just corrected that but no change in the error.

This is the code as generated form arcpro if I were to export the tool as python

out_raster = arcpy.sa.WeightedOverlay(r"('D:\Documents\School\USC\586\586_Project_5\Project_5\Project_5.gdb\slopeint' 50 'Value' (0 3; 1 3; 2 3; 3 3; 4 3; 5 3; 6 3; 7 3; 8 3; 9 3; 10 3; 11 3; 12 3; 13 2; 14 2; 15 1; 16 Restricted; 17 Restricted; 18 Restricted; 19 Restricted; 21 Restricted; 22 Restricted; 23 Restricted; 24 Restricted; NODATA NODATA);
'D:\Documents\School\USC\586\586_Project_5\Project_5\Project_5.gdb\LandCover' 50 'Class' ('Open Water' Restricted; 'Perennial Snow/Ice' 2; 'Developed, Open Space' 3; 'Developed, Low Intensity' 2; 'Developed, Medium Intensity' 1; 'Developed, High Intensity' Restricted; 'Barren Land' 3; 'Deciduous Forest' Restricted; 'Evergreen Forest' Restricted; 'Mixed Forest' Restricted; 'Shrub/Scrub' 2; 'Herbaceuous' 2; 'Hay/Pasture' 3; 'Cultivated Crops' 3; 'Woody Wetlands' Restricted; 'Emergent Herbaceuous Wetlands' Restricted; NODATA NODATA))
;1 3 1"); 
out_raster.save(r"D:\Documents\School\USC\586\586_Project_5\Project_5\Project_5.gdb\suitabilityoverlay")

DanPatterson · ‎11-19-2022

I don't know. But even though the whole input to the weighted overlay tool is raw encoded (r" ... ) the paths of the inputs and outputs are not.

'D:\Documents\School\USC\586\586_Project_5\Project_5\Project_5.gdb\slopeint'

yields errors which vanish when done as

r'D:\Documents\School\USC\586\586_Project_5\Project_5\Project_5.gdb\slopeint'

You might want to try different gdb (saving location or raw encode the file paths in the above lines and try it from within your python IDE

... sort of retired...