[GRASS-dev] Re: [GRASS GIS] #73: r.out.gdal tiff output does not work

[Helena Mitasova]

On Oct 24, 2008, at 9:32 AM, Moritz Lennert wrote:

> On 24/10/08 14:10, Markus Metz wrote:
>> GRASS GIS wrote:
>>> #73: r.out.gdal tiff output does not work
>>> -------------------------- 
>>> +-------------------------------------------------
>>>   Reporter:  helena       |       Owner:  grass-dev at lists.osgeo.org
>>>       Type:  defect       |      Status:   
>>> new                        Priority:  critical     |    
>>> Milestone:  6.4.0                     Component:  Raster        
>>> |     Version:  svn-trunk                 
>>> Resolution:               |    Keywords:  r.out.gdal,  
>>> tiff           Platform:  Unspecified  |         Cpu:   
>>> Unspecified              -------------------------- 
>>> +-------------------------------------------------
>>> Comment (by neteler):
>>>
>>>  Markus (Metz),
>>>
>>>  what about integrating your fixes from
>>>   http://markus.metz.giswork.googlepages.com/ 
>>> r.out.gdal.conservative.tar.gz
>>>  ?
>>>
>>>  Markus
>>>
>>>
>> Sure, no objections from my side, I'm using this version only. But
>> r.out.gdal is a very important module of GRASS and maybe some more
>> testing is required. Also, the new features may not find approval by
>> all, e.g. I've put in rather restrictive NULL cell handling: the user
>> has to specify a nodata value that falls within the range of the
>> selected datatype (Byte, UInt16, Int16, ...), a nodata value is no
>> longer chosen automatically as in the original version. If a nodata
>> value is not given, but NULL cells are present, r.out.gdal aborts  
>> with
>> an error message. My version also no longer uses the current region
>> resolution, instead the current region extends are aligned to the
>> resolution of the raster to be exported to avoid any implicit
>> resampling. And the colortable is only exported on request, and then
>> with a warning message.
>> If these changes are ok with you then integrate the changes,  
>> otherwise
>> maybe only some, but not all changes could be integrated. More
>> discussion needed on how to change/improve r.out.gdal?
>
> +1 for all of these changes. Let's try with those and then discuss.
>
> Moritz

I think those are useful changes and agree with Moritz that we should  
try them out.
maybe add it to svn as r.out.gdal2 so that we can test and compare  
with the old one
and then replace if there are no problems? It would be a huge help to  
get this resolved,

Helena
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