| Subject: | MGRS grid issue |
| Date: | Fri, 17 Jan 2014 13:04:51 -0500 |
| To: | bug-Geo-Coordinates-UTM [...] rt.cpan.org |
| From: | Gregory Lepore <greg [...] rhobard.com> |
I'm working with a huge number (millions) of coordinates from the
Vietnam War, which appear to be in the MGRS format. Unfortunately the
coordinates are missing the initial grid zone designators. So they
appear as: XD82950120. Using geotranz I get errors plugging in the GZDs
48P, 49P, and 49Q, and I get the correct results using GZD 48Q. So the
correct MGRS location is 48QXD82950120, which translates to
16.2860566653208, 106.71242402899 in geotranz.
Unfortunately, using Geo::Coordinates::UTM I get incorrect results using
GZD 49P and 49Q, and a duplicate correct result using 48P.
My question is - should mgrs_to_latlon be returning the incorrect
locations and the duplicate locations, or is it actually impossible to
map XD82950120 correctly without the proper GZD.
My code tries each GZD for Vietnam separately and throws out any with
errors, but with GCU I'm not getting errors thrown.
Thanks.
Greg Lepore