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Using ArcGIS 10.6 I am trying to project a shapefile data from Here street data-set in GCS WGS 1984 to WGS 1984 Web Mercator Auxiliary Sphere. While the original data has an attribute like

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it changes the POINT_NUM and Z_LEVEL data type from Short Integer to Long Integer

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Can you please let me know why this is happening and how I can prevent it?

1 Answer 1

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To try and reproduce your problem, using the same two coordinate systems as you on some test data that I created, I ran the test code below:

import arcpy
srWGS84 = arcpy.SpatialReference("WGS 1984")
srWebMerc = arcpy.SpatialReference("WGS 1984 Web Mercator (auxiliary sphere)")
arcpy.CreateFishnet_management("C:/Temp/testWGS84.shp",
                               "0 0","0 1","1","1","1","1",
                               "","NO_LABELS","DEFAULT","POLYGON")
arcpy.DefineProjection_management("C:/Temp/testWGS84.shp",srWGS84)
arcpy.AddField_management("C:/Temp/testWGS84.shp","POINT_NUM",
                          "SHORT","","","","","NULLABLE","NON_REQUIRED","")
arcpy.Project_management("C:/Temp/testWGS84.shp","C:/Temp/testWebMerc.shp",
                         srWebMerc,"",srWGS84,"NO_PRESERVE_SHAPE","","NO_VERTICAL")

The Short Integer field that I added remained as a Short Integer after running the Project.

Consequently, I am unable to reproduce what you are describing. If you cannot produce your unexpected result when running my test, I suggest that you investigate how the shapefile which you do see the unexpected result on was created.

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