0

I know there are tools that can do the conversion like pyproj, but I'm actually interested in the formula for computing it. Or if it's done with a big lookup table. I would love some information on how it's performed?

1 Answer 1

3

If I am reading your question correctly, you may find Formula For State Plane to Lat/Lon Conversion at GeoNet useful. Posters here outlined resources for the math behind State Plane to Geographic Coordinates.

I'd pay particular attention to a manual from EPSG entitled "Geomatics Guidance Note 7, part 2 Coordinate Conversions & Transformations including Formulas" and to "John P. Snyder's Map Projections: A Working Manual" (PDF).

There is some good discussion in that first link culminating in two SQL queries for running through the individual conversions for lat/lon, I'd recommend checking those out, as well.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.