R: Re: R: Re: [GRASS-user] Input raster map is outside current region

[ciccpaol at libero.it]

Hi Micha,

i fixed my previous problem...i can see the map on the display (it was because 
of the wrong resolution setting: in fact i had to add to the r.proj command the 
parameter res=<resolution of the raster converted into the map units of the 
target location>)

I can see my raster map, but the raster changed shape: all the printed squares 
of the utm system became rectangles....mmm
i guess it has got smthing to do with the resolution setting...


>----Messaggio originale----
>Da: micha at arava.co.il
>Data: 11/03/2010 14.47
>A: "ciccpaol at libero.it"<ciccpaol at libero.it>
>Cc: <grass-user at lists.osgeo.org>
>Ogg: Re: R: Re: [GRASS-user] Input raster map is outside current region
>
>On 03/11/2010 03:34 PM, ciccpaol at libero.it wrote:
>> Hi ,
>>
>> thanks Micha for your help! I tried the steps you suggested me, but they 
didnt
>> work properly; after trying that, i found an article about that
>> http://wiki.gfoss.it/index.php/Riproiezioni_di_dati_raster
>> that is more or less the same you suggested me.
>>
>> Working those steps, I finally got the right region extent. In fact when 
I'm
>> inside the target location and I'm displaying the reprojected raster map, 
the
>> coordinates values shown on the bottom of the page are right, but I can't 
see
>> the map! The page is all blank.
>>
>>    
>I guess it's time to ask for more information: Can you post the outputs 
>for *both locations* of:
>
>(Source location)
>g.region -p
>v.info -g <src vector region as below>
>r.info -g <original raster>
>
>(Target location)
>g.region -p
>v.info -g <projected vector region>
>r.info -g <final projected raster which doesn't appear>
>
>>> What you do here is:
>>>
>>> - go back to the source location and run
>>> v.in.region out=src_region
>>> This creates a vector polygon of the bounds of the current region.
>>>
>>> - now switch to the new, target region and do
>>> v.proj location=<src_location>  mapset=<src_mapset>  in=src_region
>>> out=tar_region
>>> to reproject that rectangular polygon to the target region . Next run
>>> g.region vect=tar_region
>>> And the region in your target location should match where the raster
>>> wants to be.
>>>
>>> - Now try your r.proj comand
>>>      
>>    
>>>>
>>>>        
>>>
>>> -- 
>>> Micha Silver
>>> http://www.surfaces.co.il/
>>> Arava Development Co.  +972-52-3665918
>>>
>>>
>>>      
>>
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>>
>>
>>    
>
>
>-- 
>Micha Silver
>http://www.surfaces.co.il/
>Arava Development Co.  +972-52-3665918
>
>