topic Re: ClassifyRaster() Function not working in ArcGIS API for Python Questions

ClassifyRaster() Function not working

KarenSchulz — Mon, 12 Oct 2020 11:17:33 GMT

The function

arcpy.sa.Functions.ClassifyRaster(in_raster, in_classifier_definition, in_additional_raster='#')

is giving me the error RuntimeError: Object: Error in executing tool.

I set up the example analogue to Raster klassifizieren—Hilfe | ArcGIS for Desktop .

You can see the code in the following:

import arcgis
from arcgis.gis import GIS
from arcgis.raster import Raster

import arcpy
from arcpy.sa import *

from arcgis.raster.functions import *
from arcgis.raster.analytics import *

arcpy.CheckOutExtension("Spatial")

file_path = r"<path>.tif"
raster_test = Raster(file_path)

test_img = segment_mean_shift(raster_test, spectral_detail=None, spatial_detail=None, spectral_radius=None, spatial_radius=None, min_num_pixels_per_segment=None)

# file generated through graphical interface, because python code is not working as well

ecd_file = f"<path>/Preview_Segmented_TrainIsoCl.ecd"

ClassifyRaster(in_raster=test_img, in_classifier_definition=ecd_file)

I appreciate any help in solving this issue 😃

Re: ClassifyRaster() Function not working

DanPatterson — Mon, 12 Oct 2020 16:37:56 GMT

ecd_file = f"<path>/....

did you mean

ecd_file = r"<path>/...

or was the 'f' instead of the 'r' a copy issue?

Re: ClassifyRaster() Function not working

KarenSchulz — Wed, 14 Oct 2020 01:17:32 GMT

Yeah, it was just a copying issue. Should have been
ecd_file = r"<path>\Preview_Segmented_TrainIsoCl.ecd"

Re: ClassifyRaster() Function not working

DanPatterson — Wed, 14 Oct 2020 01:49:02 GMT

Classify Raster (Spatial Analyst)—ArcGIS Pro | Documentation

# file generated through graphical interface, because python code is not working as well

Not sure what you mean by that, but the warning in the help suggests something appears to be wrong with the inputs in a big way and I can't tell from your code (not sure what all the imports are needed for given the code examples in the help files)

The .ecd file contains all the information needed to perform a specific type of Esri-supported classification. The inputs to this tool must match the inputs used to generate the required .ecd file.
The .ecd file can be generated from any of the classifier training tools, such as Train Random Trees Classifier or Train Support Vector Machine Classifier.