I've been trying to project a few coordinates from NAD27 to NAD83 using Alteryx. So far the steps I have taken include the following:
I am using a 'Create Points' tool to input my longitude and latitude that pertains to my NAD27, I have also selected 'Fields are Projected Floating Points' as my option in this tool and have selected EPSG:32025 which pertains to NAD27/Oklahoma South . The next tool I use is the 'Spatial Info' tool in which my input is my spatial object field: 'centroid' from the previous tool and I have selected Items to Output: 'Centroid as X and Y Fields', I also have the Projection for XY output selected as EPSG:32125 in order to project to NAD83/Oklahoma South.
However, my coordinates are not correct. I have attached a csv of my coordinates. For an example one of my original NAD27 latitudes is:34.626746, longitude is:-97.804664. My projected NAD83 latitude is:24.527699, and longitude is:-9664.478024. Even if I were to move the decimal place of my longitude, the latitude alone puts my coordinate in a different state entirely.
Please help me diagnose where it is I am going wrong so that I might correctly perform this task on Alteryx and I can receive the correctly project coordinates.
Solved! Go to Solution.
It appears that the NAD83 Oklahoma Southern Projection (EPSG: 32125) is not measured in Lat/Long but rather Easting/Northing and using units of meters not degrees (hence why moving the decimal place to treat it like lat/long messes everything up). Similarly, NAD27 Oklahoma Southern Projection (EPSG: 32025) is not measured in Lat/Long, but is also measured E/N (except using units of US Survery Feet). If you plot, the points you included as Lat/Long via NAD27 projection, all of your points are directly on top of one another for this reason.
The values included do appear to be in the form of Lat/Long, which indicates to me that you are not working with values using the EPSG: 32025 projection, but rather, likely using EPSG: 4267, which uses NAD27 Datum and is uses degrees for units, which you can then map to NAD83 (EPSG: 4269), which also uses degrees.
Hope this helps and Happy Solving!
