fortran90 module to convert coordinates between UTM and geographic
Set of conversion tools present in this module :
- function meriref : compute the reference meridian for a given UTM zone
- function loadgeoid : load the parameters for a given geoid, e.g. wgs84
- subroutine convgeoutm : principal frontend. Compute the relative position in meter of a geographic point. The function is able to work in both way.
- function guessfu : compute the UTM zone corresponding to a longitude
- subroutine utmgeo : conversion from utm to geographic coordinates.
- subroutine geoutm : conversion from geographic to utm coordinates.
This code is the application of the formulas in
Map Projections: A Working Manual, p. 63 by J. P. Snyder (1987) published by the USGS.
2017 - André Herrero - andre.herrero@ingv.it
Use this code freely. If you find it useful, please advertize the present original version. Any feedback is useful and will be welcome.
Thank you.
Warning : This code is very simple and do not take into account complex UTM zonation. Use it at your own risk!