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Instructions provided describe how to calculate XY coordinates using Python.
There are a number of ways to calculate XY coordinates using Python and ArcGIS tools. Two simple Python methods include using the Add XY Coordinates tool syntax or the Calculate Field tool syntax in combination with the Python Extent class within a script.
Both these options can be used from within the tool, the Python window, or a Python script. Below are Python script versions. The !shape.extent.XMax! and !shape.extentYMax! options can also be used in the Field Calculator when the parser is set to Python. More complicated extraction of XY coordinates from points can be found in the ArcPy-Point document in the Related Information section.
# Import arcpy module import arcpy # Local variables: arcpy.env.workspace = r"C:\Test.gdb" Point = "Point" Point_Project = "ProjectPoint" # Process: Project arcpy.Project_management(Point, Point_Project, "GEOGCS['GCS_WGS_1984',DATUM['D_WGS_1984',SPHEROID['WGS_1984',6378137.0,298.257223563]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]]", "NAD_1983_To_WGS_1984_5", "PROJCS['NAD_1983_Alaska_Albers',GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Albers'],PARAMETER['False_Easting',0.0],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-154.0],PARAMETER['Standard_Parallel_1',55.0],PARAMETER['Standard_Parallel_2',65.0],PARAMETER['Latitude_Of_Origin',50.0],UNIT['Meter',1.0]]") #Calculate the XY Coordinates arcpy.AddXY_management(Point_Project)
import arcpy fc = r"C:\New File Geodatabase.gdb\Point" arcpy.AddField_management("Point", "X", "DOUBLE") arcpy.AddField_management("Point", "Y", "DOUBLE") arcpy.CalculateField_management("Point", "X", "!shape.extent.XMax!","PYTHON_9.3") arcpy.CalculateField_management("Point", "Y", "!shape.extent.YMax!","PYTHON_9.3")
Note: This functionality is also accessible in ArcGIS 9.3 and 9.3.1 using arcgisscripting. Please see the Related Information section for more information.