Convert state plane coordinate to lat/lon

CalebPitman — Fri, 26 Sep 2014 00:00:18 GMT

Hello,

I am trying to convert SPC similar to the earthpoint one linked below. I've found ways to do it, but I need to do it programmatically, preferably in PHP but any language would work.

Anyone have a function to do this?

State Plane Coordinate System

Re: Convert state plane coordinate to lat/lon

FreddieGibson — Wed, 16 Sep 2015 18:35:39 GMT

In ArcGIS this could be done in a number of ways. You could review these options to see if they'll work with your workflow.

1. Call the Add XY Coordinates (Data Management) tool after setting the Output Coordinate System environment variable to a system that uses lat/long values, such as WGS1984.

Add XY Coordinates (Data Management)

http://desktop.arcgis.com/en/desktop/latest/tools/data-management-toolbox/add-xy-coordinates.htm http://resources.arcgis.com/en/help/main/10.2/index.html#/Add_XY_Coordinates/001700000032000000/

2. Call the Project Data Management tool to project the feature class to WGS1984. Then you could calculate the xy coordinates of the points in Lat/Long or parse them in python.

Project (Data Management)

http://desktop.arcgis.com/en/desktop/latest/tools/data-management-toolbox/project.htm http://resources.arcgis.com/en/help/main/10.2/index.html#/Project/00170000007m000000/http://desktop.arcgis.com/en/desktop/latest/tools/data-management-toolbox/project.htm

3. Use a cursor to project the records within a feature class to WGS1984. This would return you the lat/longs in a tuple if you use the Shape@XY token

SearchCursor (arcpy.da)

http://resources.arcgis.com/en/help/main/10.2/index.html#//018w00000011000000 http://desktop.arcgis.com/en/desktop/latest/analyze/arcpy-data-access/searchcursor-class.htm

Reading Geometries

http://resources.arcgis.com/en/help/main/10.2/index.html#//002z0000001t000000 http://desktop.arcgis.com/en/desktop/latest/analyze/python/reading-geometries.htm

4. Create a point object and use its projectAs method to project the point to WGS1984, after which you can parse the X and Y values.

PointGeometry

https://pro.arcgis.com/en/pro-app/arcpy/classes/point.htm http://desktop.arcgis.com/en/desktop/latest/analyze/arcpy-classes/pointgeometry.htm

5. NON ESRI : If the data comes in as shapefiles you can use osgeo.ogr to open it, parse the coordinates, and then use pyproj to project it to the needed system.

topic Re: Convert state plane coordinate to lat/lon in Python Questions

Convert state plane coordinate to lat/lon

Re: Convert state plane coordinate to lat/lon