[GRASSLIST:292] Re: r.out.gdal problem

[Wolfgang Zillig]

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
>>>
>>>
>>>  
>>>       
>
>