[GRASS-user] automated cropping of reprojected images

[pmarc]

2006/7/13, Glynn Clements <glynn at gclements.plus.com>:
>
> Trevor Wiens wrote:
>
> > I'm wondering if there is an easy way to crop reprojected images. In
> > this case it is for landsat images that will eventually be layed
> > together to cover most of Canada. Thus the extra space that is created
> > in rotating the images becomes an issue.

>
> When you export raster map, the resulting file has the same number of
> rows and columns as the current region at the time that you export. If
> you shrink the region, you'll get a smaller image.
>
> Or are you referring to something else?

Glinn,

Trevor refers to the black areas in the corners of Landsat scenes. He
want to get rid of those to patch several images together.

IIRC, Dylan has patched several images of California and Arizona.
Haven't seen the results, though. Maybe he could share his experience
=]


-- 
Paulo Marcondes = PU1/PU2PIX
-22.915 -42.229 = GG87vc (http://www.amsat.org/cgi-bin/gridconv)
Debian GNU/Linux = http://rj.debianbrasil.org = http://www.debian.org