getting true extents

[Aaron Craig]

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Sounds like a problem I had recently.

You need to make sure that your proportions are the same between your
extent and your pixels -- that is that (using 600 x 400):
minx : maxx = 0 : 600
miny : maxy = 0 : 400

Otherwise, when you convert between one system and another, your
calculations will be thrown off.

Jeff Portwine wrote:
|
| My map image width/height is 600x400... and when it draws the map in
| this area, it does not map out the extents that I have set in the map
| file.  It seems to map the proper "x" extents, but the "y" extents
| extend north and south past the set "y" extents to fill the map.   This
| doesn't really present a huge problem most of the time, but now I have
| the need to calculate pixel position and since i don't know the actual
| extents I can't do this.
|
| Anybody have any suggestions?
|
| Thanks,
| Jeff
|

- --
Aaron Craig
mercutio at pobox.com

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