[GRASS-user] Import question
Adam Dershowitz, Ph.D., P.E.
adershowitz at exponent.com
Mon Sep 20 12:09:16 EDT 2010
I have a large ortho image, that is in MrSID format (A full county at high res). The file is ~3.5 gig. It covers a much larger area then I need. So I set my region to the size that I do need, and then imported. The import took something like 10 hrs. And, I now see that in my PERMANENT folder I have 3 files that are each 15 gig (one red, one blue, one green),
The map was imported, but if I zoom to the size of the current map, it seems that the whole map was imported, not just the area inside the current region.
I thought that imports are cropped to the current region? Am I mistaken about this? Is there some setting to cause this to happen?
I did the import with r.in.gdal. I am using the binary release of 6.4 on a Mac.
The reasons that I care are 1) This map, for a small area of interest, it taking up 45 gig on my hard drive. 2) Because the map is so large, it takes a while for the display to update when I make any changes.
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