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geographic coordinates

Topics: General Topics
Aug 23, 2006 at 4:46 PM
Hi all, I have an ECW raster image georefenced by UTM33 projection coordinates. How to get geographical coordinates by latitude and longitude from my map?
Anyone can help me...? I need one example.
Aug 24, 2006 at 7:26 AM
You cannot transform a raster image in SharpMap, but you could set up a transformation from UTM to Long/Lat.
See the transformation example in the demo and read the wiki.
Aug 24, 2006 at 10:00 AM
I must not trasform a raster image, but I want to get coordinates from image by ImageToWorld method in lat/long. It's possible?
Aug 24, 2006 at 11:04 AM
You first use ImageToWorld to get the coordinate in UTM33. Then use some transformation code as shown in the examples I referred to (transformtests.aspx actually show how to convert back and forth between long/lat and UTM).
Aug 24, 2006 at 11:43 AM
Thank you, it is that you looked for.