[Qpegps-users] [qpegps - Help] RE: UTM to lt/lg converting problem

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By: rhaselme

The mentioned 2 methods do the conversion between longitude/latitude and the
corresponding pixels on the map for a transverse mercator projection (UTM is
a transverse mercator projection where the coordinates are giving in northing,easting
and zone instead of longitude and latitude). The transformation from UTM coordinates
to latitude/longitude is done with the method UTMtoLL. As I do not have a single
UTM map, I couldn't check it myself if this works correct. Another important
point of this conversion, is on which "datum" your map is based.
Are the UTM coords and your correct answer both based on the WGS84 datum ? The
current algorithm works only for this datum. Is there a common need for UTM
maps with another datum than WGS84?

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