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I need the bounding box coordinates for NAD27 (EPSG/SRID 4267) to check the user's coordinate input. shows the area that doesn't cover North America at all. The EPSG Geodetic Parameter Registry gives the positive longitude as well.

What's the trick? What coordinates should I use or where I can find them?



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Are you using any GIS software to try and do this? – PolyGeo May 22 '13 at 21:18
The reason that there's a positive longitude value is because Alaska's Aleutian islands cross into the eastern hemisphere. If you can ignore those few islands, you could change the western longitude to -180, or if you can also omit Hawaii to something like -125. – mkennedy May 22 '13 at 22:27
PolyGeo, no, I'm just writing it in Visual Studio. – yup May 22 '13 at 23:41
mkennedy, thank you! I'll try it. Sounds reasonable. – yup May 22 '13 at 23:42

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