[GRASS-user] Region and not-processed data

[stephen sefick]

This thread in the archives may answer your questions.

http://osgeo-org.1803224.n2.nabble.com/Import-question-td5551110.html#a5558429

HTH,

Stephen Sefick

On Tue, Sep 28, 2010 at 8:17 AM, Kim Besson <kimbesson1981 at gmail.com> wrote:
> 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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> 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