Unexpected result for Extract values to points in Arcpy

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10-07-2020 11:48 AM
mariasheikh
New Contributor

I am working on spatial interpolation. To extract values for my required points, I am using "Extract values to points" tool from Spatial interpolation toolbox. The tool is working good in ArcMap 10.5. But when I try to use the tool from ArcPy. Same value is generated for each point in test set.

Here is my code:

         #point extraction    

         # Set local variables

         inPointFeatures = "test.lyr"

         inRaster = "out1"

         outPointFeatures = "extractvaluespts.dbf"

         # Check out the ArcGIS Spatial Analyst extension license

          arcpy.CheckOutExtension("Spatial")

         # Execute

          ExtractValuesToPoints ExtractValuesToPoints(inPointFeatures, inRaster, outPointFeatures, "INTERPOLATE",          "VALUE_ONLY")

My code for test point layer is as follow:

          ##XY layer for test

         # Set the local variables

          in_Table = "test.csv"

          x_coords = "LONGITUDE"

         y_coords = "LATITUDE"

          z_coords = ""

         out_Layer = "test"

         saved_Layer = r"C:\Users\myc\Desktop\thesis combine\weather parameters\max temp\with elevation\chk1\test.lyr"          # Set the spatial reference

         spRef = r"Coordinate Systems\Geographic Coordinate Systems\World\WGS 1984.prj"

          # Make the XY event layer...

          arcpy.MakeXYEventLayer_management(in_Table, x_coords, y_coords, out_Layer, spRef, z_coords)

         # Print the total rows

         print(arcpy.GetCount_management(out_Layer))

         # Save to a layer file

         arcpy.SaveToLayerFile_management(out_Layer, saved_Layer)

I am unable to understand the reason behind this error? P.S. When I work with geostatistical analyst tool set and GA to points, it works perfect, but I require to use raster calculator that's why I cannot use Geostatistical analyst. How can I fix this?

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