[GRASS-user] Raster displaying problem

[Carlos "Guâno" Grohmann]

You can try to create a mask with r.digit, and then use r.resample
(without change region settings) to get a new map with data only
inside the mask.

Carlos



On 2/24/07, Radomir <dod.mort at gmail.com> wrote:
> Thanks,
> but the problem is to define the region.
> The map is in Polish coordinate reference system (EPSG 2180 - Poland
> CS92) with kilometre grid. But the kilometre grid is not parallel to the
> latitude/longitude grid. And the inner of the map is along
> latitude/longitude. So if I define the region to the kilometre grid I
> will still have small unwanted parts and I can't define the region to
> the lon/lat grid.
> Best regards,
> Radomir
>
>
> Dnia 24-02-2007, sob o godzinie 21:12 +0100, WolfgangZillig napisał(a):
> > set first your region to the inner region of the map.
> > then r.mapcalc newmap=originalmap
> > then g.region rast=otheroriginalmap,newmap
> > then r.patch input=otheroriginalmap,newmap output=patched
> >
> > Hope that helps
> > Wolfgang
> >
> > Radomir schrieb:
> > > Hi all,
> > > I have the number of scanned maps (all are jpeg's with jgw referenced
> > > files). All scans are not prepared by me, and all are scanned as whole
> > > sheet (with legend and all other information). So when I display them in
> > > grass or qgis, the legend of one sheet overlay the part of the next one
> > > sheet (the screen shot is here: http://mort.no-ip.org/screen.png ).
> > > Is there any way to don't display the part of raster file?? Or to cut
> > > off those parts of scanned sheets??
> > > Thanks
> >
> > _______________________________________________
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> > grassuser at grass.itc.it
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> --
> Radomir
>
> ----
> The Future Is Now ;)
>
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-- 
+-----------------------------------------------------------+
              Carlos Henrique Grohmann - Guano
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
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