[GRASS-user] Region and not-processed data

[Kim Besson]

Hi

Ok about this I just need to have an idea (or a link that can explain me
this):
1- When I import a raster map (r.in.gdal) will it import all the raster or
only the portion that fits in the current defined region?
2- If I define as a region a wider area than the image, will it process
where the image is not available?

Thanks
Kim

2010/9/27 stephen sefick <ssefick at gmail.com>

> Where you don't have the image, if I understand you correctly, would
> be NULL values?  In that case you will have to default to someone more
> experienced, but I suspect that it is run on the entire map, but NULL
> means no data so no process.  Just a wag.
> hth
>
> Stephen
>
> On Mon, Sep 27, 2010 at 8:58 AM, Kim Besson <kimbesson1981 at gmail.com>
> wrote:
> > Hi stephen and rest of GRASS users
> >
> > That was not my quiestion. My question is: if a have a an uimage inside a
> > regions, will it process and run for all the region or only for where I
> have
> > the image(it's not importing only image-processing). ?
> >
> > Thanks
> > Kim
> >
> > 2010/9/27 stephen sefick <ssefick at gmail.com>
> >>
> >> I get a little confused with the region raster processing stuff also.
> >> But, this is what I do, and it seems to work.  Anything that is
> >> brought in from the outside (r.in.*) will import the entire map.
> >> Anything that is done withing GRASS will respect the region.  So, just
> >> make sure to set the region before each calculation and you should be
> >> OK.
> >>
> >> On Mon, Sep 27, 2010 at 8:52 AM, Kim Besson <kimbesson1981 at gmail.com>
> >> wrote:
> >> > Greetings
> >> >
> >> > I have a very "dumb" question regarding region definition/processing:
> >> > - I have defined a an area (example; 30N 20S -10W -5W). I have a
> raster
> >> > image with (30N 15N -7W -5) I mean, it only cover a part of the
> region.
> >> > If I
> >> > run GRASS image-processing algorithms and processors does it run in
> all
> >> > image or only where I have a raster image?
> >> >
> >> > Thanks and sorry for tyhis such a dumb question
> >> > Kim
> >> > _______________________________________________
> >> > grass-user mailing list
> >> > grass-user at lists.osgeo.org
> >> > http://lists.osgeo.org/mailman/listinfo/grass-user
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Stephen Sefick
> >> ____________________________________
> >> | Auburn University                                   |
> >> | Department of Biological Sciences           |
> >> | 331 Funchess Hall                                  |
> >> | Auburn, Alabama                                   |
> >> | 36849                                                    |
> >> |___________________________________|
> >> | sas0025 at auburn.edu                             |
> >> | http://www.auburn.edu/~sas0025             |
> >> |___________________________________|
> >>
> >> Let's not spend our time and resources thinking about things that are
> >> so little or so large that all they really do for us is puff us up and
> >> make us feel like gods.  We are mammals, and have not exhausted the
> >> annoying little problems of being mammals.
> >>
> >>                                 -K. Mullis
> >>
> >> "A big computer, a complex algorithm and a long time does not equal
> >> science."
> >>
> >>                               -Robert Gentleman
> >
> >
>
>
>
> --
> Stephen Sefick
> ____________________________________
> | Auburn University                                   |
> | Department of Biological Sciences           |
> | 331 Funchess Hall                                  |
> | Auburn, Alabama                                   |
> | 36849                                                    |
> |___________________________________|
> | sas0025 at auburn.edu                             |
> | http://www.auburn.edu/~sas0025             |
> |___________________________________|
>
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
>                                 -K. Mullis
>
> "A big computer, a complex algorithm and a long time does not equal
> science."
>
>                               -Robert Gentleman
>
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