Forum: General Topics
Forums / General Topics / TMJ map organizer Calibration Problems
| Subject: | TMJ map organizer Calibration Problems | |
davo 19:28 | Hi all Having alot of trouble trying to calibrate my scanned maps with map organizer. Using the instructions the maps seem to be OUT by alot if not at all. waypoints and directions arent on these maps?? I am using 24 jpg maps, and putting in the Lat and Long from known accurate calibrated maps. Help!! any tips or solutions?? thanks DAVO | |
Stephen 10:00 Location: Phone Model: | Hi Davo, A couple of thoughts... What projection are the maps in - if they are not perfectly 'rectangular' (ie, with longitude left to right, latitude top to bottom), then there will always be some inaccuracies, though I would expect the waypoints to still show up at least! Are you entering the latitude/longitude extents correctly - you need to ensure the +/- signs are the right way round (North and East are positive, South and West negative)... Regards, Stephen | |
davo 17:07 | Stephen, In he southern Hemisphere, such as Australia, should the N be negative when calibrating maps. As I notice my home location is -38.xxxx N, 145.xxxxE REgards, Davo | |
Stephen 8:23 Location: Phone Model: | Hi Davo, Yes, thats right. Also, looking at the Map Organiser, the Min and Max Latitude labels might be a bit confusing - they should probably be labelled as Bottom and Top Latitudes instead. ie, the Min Latitude should be the latitude of the Bottom of your map, and the Max latitude the Top of the map. So in the southern hemisphere the Min Latitude will actually be a larger number than the Max Latitude! eg, your figures will be something like: Min Lat: -38.xxx Max Lat: -37.xxx Min Long: 145.xxx Max Long: 146.xxx Hope this makes sense! I'll probably re-label the Map Organiser next time I update it... Cheers, Stephen | |
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