[GRASS-user] Display Of Tiff Raster file Stored on HDD in Grass

[Nikos Alexandris]

I forgot to cc to the list before... so once again, and this time more
clear:

* check the projection system information of your tif file with gdalinfo
from the commandline. 

(man gdalinfo for help)

* and then... (the message I forgot to cc to the list):

You have to know in which coordinate system your "nf42_geo.tif" data is
projected. If you are sure that your data is projected in the coordinate
system which you assigned in your LOCATION 

(with g.region -o you get that info as well) 

then just use an extra option to ignore these errors:

-o in the commald line or the respective box in the GUI "Override
projection"


e.g. CLI: > r.in.gdal -e -o in=nf42_geo.tif out=tm


By the way,

it is very helpful and saves time and energy to consult tha help pages
always. There are (almost) always the necessary examples and
explanations.


On Wed, 2008-02-13 at 15:05 +0530, Kunal Malik wrote:
> Hi!!
> I have done the things required.
> but from the command line ,when i am using  r.in.gdal -e
> -n=nf42_geo.tif out=tm ..
> I am getting the message
> 
> WARNING: Datum 'unknown' not recognised by GRASS and no parameters
> found.
>          Datum transformation will not be possible using this
> projection
>          information.
> ERROR: Projection of dataset does not appear to match current
> location.
> 
> Same messge is coming when I am doing the same through GIS Manager..
> 
> Can u help me i this Regards..so that i could open the avalible TIf
> image
> 
> On 2/13/08, Nikos Alexandris <nikos.alexandris at felis.uni-freiburg.de>
> wrote:
>         Hi!
>         
>         (Assuming you have created a LOCATION based on the coordinate
>         system in
>         which you want to work and in which your data is projected...)
>         
>         * Using r.in.gdal from the command line   or   from the
>         GUI  under
>         "File>Impor> Raster map> Multiple formats using GDAL"
>         
>         * Important is to check the extent and the resolution of your
>         current
>         working "region". If these settings are not the proper ones
>         the you
>         don't see anything cause your data are somewhere out of your
>         "screen"
>         but still inside your LOCATION.
>         
>         a. With "g.region -p" in the command line
>         or  "Config>Region>Display
>         region settings" you can check the   current   seetings.
>         
>         b. Fastest way is to tell r.in.gdal  to  "extend location
>         extents based
>         on new dataset" (either with r.in.gdal -e input=... output=...
>         and the
>         rest   or   by checking the respective option in the GUI of
>         r.in.gdal)
>         
>         Hope this helps you a bit...
>         
>         
>         On Wed, 2008-02-13 at 09:32 +0530, Kunal Malik wrote:
>         > I am a new grass user,I have Installed the grass-6.2.3 on my
>         > system.but i m not able to Import & display  the raster
>         image.(Tiff
>         > Image) which is kept on my hard disk 50 mb in size..
>         > could anyone tell the way to see the raster image,i am
>         looking for the
>         > standard document for using grass.if anyone having this
>         > document,please forward it to me..
>         > Thanks in Advanc
>         >
>         > On 2/13/08, Kunal Malik <kunal.malik81 at gmail.com> wrote:
>         >         I am a new grass user,I have Installed the
>         grass-6.2.3 on my
>         >         system.but i m not able to Import & display  the
>         raster
>         >         image.(Tiff Image)
>         >         could anyone tell the way to see the raster image,i
>         am looking
>         >         for the standard document for using grass.if anyone
>         having
>         >         this document,please forward it to me..
>         >         Thanks in Advanc
>         >
>         >         --
>         >         Thanks & Regards
>         >
>         >         Kunal Malik
>         >         09871147561
>         >
>         >
>         >
>         > --
>         > Thanks & Regards
>         >
>         > Kunal Malik
>         > 09871147561
>         > _______________________________________________
>         > grass-user mailing list
>         > grass-user at lists.osgeo.org
>         > http://lists.osgeo.org/mailman/listinfo/grass-user
>         --
>         Nikos Alexandris
>         .
>         Department of Remote Sensing & Landscape Information Systems
>         Faculty of Forestry & Environmental Sciences,
>         Albert-Ludwigs-University Freiburg
>         .
>         Tel.  +49 (0) 761 203 3697 / Fax.  +49 (0) 761 203 3701 /
>         Skype: Nikos.Alexandris
>         .
>         Address: Tennenbacher str. 4, D-79106 Freiburg i. Br., Germany
>         
> 
> 
> 
> -- 
> Thanks & Regards
> 
> Kunal Malik
> 09871147561
-- 
Nikos Alexandris
.
Department of Remote Sensing & Landscape Information Systems
Faculty of Forestry & Environmental Sciences, Albert-Ludwigs-University Freiburg
.
Tel.  +49 (0) 761 203 3697 / Fax.  +49 (0) 761 203 3701 / Skype: Nikos.Alexandris
.
Address: Tennenbacher str. 4, D-79106 Freiburg i. Br., Germany
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