[GRASSLIST:2636] Re: Can I import USGS DOQQ files?

[Kevin Slover]

Ben,
	looking at the DOQQ's that you are able to download from datadepot.com,
they come in TIF format.  I have been able to import these using
r.in.tiff without too many issues.  
You are exactly correct in saying that they are essentially big infrared
photographs with 1 meter resolution.  They are also generally
georeferenced...you are lucky that the file size is only 7MB...generally
TIF formats for DOQQ are much larger from what I have seen, and
generally they will then compress them using MrSID, which at this time,
is not supported within GRASS.  And MrSID (Lizardtech) does not have a
conversion at this point from SID to TIF...

Ben Logan wrote:
> 
> Howdy,
> 
> I found some DOQQs at http://www.gisdatadepot.com, and wondered if I
> can import them into Grass 5.  I downloaded one (it was about 7Mb),
> and tried to import it with r.in.gdal, but it didn't recognise any of
> the files as a supported format.
> 
> BTW, what exactly are DOQs?  I see it says something about infrared,
> and 1 meter.  Are they essentially infrared photographs with 1 meter
> resolution?  (If so, no wonder they're so big!)
> 
> Thanks,
> Ben
> 
> --
> Ben Logan: blogan at newcreature dot org
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