[GRASSLIST:294] Re: r.out.gdal problem

[Jachym Cepicky]

I would say, that type=Int32 shold work fine

jachym

On Tue, Mar 21, 2006 at 06:53:50PM +0100, Wolfgang Zillig wrote:
> My raster map is from the type CELL (with a range of [0-32767]). Can I use (and 
> how) r.out.gdal directly?
> 
> Wolfgang
> 
> 
> 
> Jachym Cepicky schrieb:
> >Hallo,
> >
> >On Tue, Mar 21, 2006 at 04:59:43PM +0100, Wolfgang Zillig wrote:
> >  
> >>To make it clear, I have a georeferenced raster grafic. r.out.tiff works, and 
> >>I can do successfully:
> >>
> >>C:\Documents and Settings\s0167070>gdal_translate -of GTiff -co TILED=YES -co 
> >>CO
> >>MPRESS=JPEG -co JPEG_QUALITY=65 in.tif out.tif
> >>
> >>(But I have to say that I also have FWTools installed on my computer, I 
> >>haven't tried with cygwin)
> >>
> >>Is it possible to export a raster file with the command given above? Grass 
> >>always complains that I have to specify the "type", which I don't know.
> >>    
> >
> >Type is, what does your r.info your_map |grep "Data Type" you.
> >
> >This will be CELL (integer), DCELL or FCELL (floating point)
> >
> >r.out.tiff makes always integers from floating point maps. via
> >r.out.gdal's "type" option, you can specify the precision of resulting
> >raster file
> >
> >hope, this helps
> >
> >Jachym
> >
> >  
> >>Wolfgang
> >>
> >>
> >>Patton, Eric schrieb:
> >>    
> >>>When you say graphic, do you mean a non-georeferenced image? I'm guessing,
> >>>maybe r.out.gdal is only good for georeferenced images. Have you had any
> >>>luck trying 'gdal_translate -of JPEG input output'?
> >>>
> >>>~ Eric.
> >>>-----Original Message-----
> >>>From: owner-GRASSLIST at baylor.edu
> >>>To: grasslist-en
> >>>Sent: 3/21/2006 10:18 AM
> >>>Subject: [GRASSLIST:281] r.out.gdal problem
> >>>
> >>>Hello,
> >>>
> >>>I somehow don't completely understand the usage of r.out.gdal. I prepared a 
> >>>graphic (which is an imported tiff) with r.composite. I can export it with 
> >>>r.out.tiff without any problems. But how can I use r.out.gdal to export it 
> >>>as JPEG (or GTiff with TILED=YES). I always fail
> >>>
> >>>to specify the correct option for the required "type". I already tried every 
> >>>possibility which is listed (Byte, Int16,...), but without success. What 
> >>>"type" do I have to use?
> >>>
> >>>Thanks
> >>>
> >>>Wolfgang
> >>>
> >>>
> >>>       
> >
> >  
> 

-- 
Jachym Cepicky                                  
e-mail: jachym.cepicky at centrum.cz           
URL: http://les-ejk.cz                      
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