arcpy.mp adding excluded values and reclassify

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02-20-2021 01:20 PM
curtvprice
MVP Esteemed Contributor

Trying to get implement an ArcMap (arcpy.mapping) to ArcGIS Pro 2.7 

Here's what I have in ArcMap:

 

 

fringe_shades = os.path.join(os.path.dirname(__file__),
    "lyr", "Fringe{}.lyr".format(cycles))
outlyr = arcpy.mapping.Layer(fringe_shades)
pth = os.path.dirname(rast.catalogPath)
outlyr.replaceDataSource(pth, "NONE", os.path.basename(rast.catalogPath))
outlyr.symbology.excludedValues = ex_str
outlyr.symbology.reclassify()
outlyr.name = results
# add to map
mxd = arcpy.mapping.MapDocument("CURRENT")
arcpy.mapping.AddLayer(mxd.activeDataFrame, outlyr)
arcpy.RefreshActiveView()

 

 

I can't see a way to apply an exclusion and reclassify in arcpy.mp. Here's what I have so far. I don't seem to be able to add my layer to map like I did in ArcMap as I m.addLayer doesn't seem to let me add a geoprocessing layer object to my map. So I'm adding it using the GP environment.

 

 

outlyr = arcpy.MakeRasterLayer_management(rast.catalogPath, results)
fringe_shades = os.path.join(os.path.dirname(__file__),
     "lyrx", "Fringe{}.lyrx".format(cycles))   
outlyr = arcpy.ApplySymbologyFromLayer_management(outlyr, fringe_shades, None, "UPDATE")        
parameters[5].value = outlyr
arcpy.SetParameterAsText(5, outlyr)

 

 

It seems like I should be able to use the arcpy.mp.Layerfile() class to access a Layer object, but I don't seem to have anything like the .reclassify() method.

The ApplySymbologyFromLayer tool works with a geoprocessing layer object, applying new data ranges, but then I can't exclusions and reclassify. I had to write a separate tool to apply exclusions after I added the raster layer tot he map using CIM access -- but I can't reclassify, just turn the pixels off by setting the exclusion values:

 

# use CIM to set exclusion ranges
p = arcpy.mp.ArcGISProject("CURRENT") 
m = p.activeMap
ly = m.listLayers(parameters[0].valueAsText)[0]
lyc = ly.getDefinition('V2')
lyc.colorizer.exclusionRanges = [-.0001, .0001]
ly.setDefinition(lyc)

 

 

This works for me, but wish I could figure out how to do it in the main tool.

 

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curtvprice
MVP Esteemed Contributor

Good Great news, the ArcGIS Pro dev team is working on this. Thank you @JeffBarrette 
Esri Case #02746274 - arcpy.mapping symbology.excludedValues issue

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curtvprice
MVP Esteemed Contributor

Good Great news, the ArcGIS Pro dev team is working on this. Thank you @JeffBarrette 
Esri Case #02746274 - arcpy.mapping symbology.excludedValues issue

View solution in original post

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