> If the screen projection really is UTM, then it is in some zone as > determined somehow, arguably best by the proper zone for the central > point. This lets you convert lat/lon to UTM even if you end up in the > wrong zone. Most conversion code lets you force the zone, as opposed to > finding out the natural zone.
The projection is done based on the zone at the center position. The zone is for the east<->west, whereas the designation letter is the latitude band, being 8 degrees wide, which Viking currently shows as part of the UTM readout. This use of the from screen position is most likely for the UTM position readout of the mouse pointer location, so when viewing on a sufficiently zoomed out manner (e.g. around country / US state levels) the coverage will cross these bands. -- Be Seeing You - Rob. If at first you don't succeed, then skydiving isn't for you. _______________________________________________ Viking-devel mailing list Viking-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/viking-devel Viking home page: http://viking.sf.net/
