Quote Originally Posted by EricPoehlsen View Post
The first and foremost question is: Do you really need a 1.5x1.5m map with 720 DPI? - You are right, a file with that dimension would be around 42k in both dimensions. That boils down to a massive file with probably around 5-10 GB per layer (uncompressed) ...

I would assume am Map this size is put up on a wall as kind of poster. The necessary DPI or PPI depends on the viewing distance - so you probably need something around 150 - 240 DPI - which would reduce the image size to ~10.000 pixels in both dimensions.

Beyond that - the question is, what style is planned for the map, how much actual detail do you want ...
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