[Qgis-user] Raster banding in print composer

[Marco Hugentobler]

Hi Matt

It is ready to use. There might be some smaller issues to fix in the 
branch. However if you just need a background map, it should be no problem.
The code is available on github, repository 
git://github.com/mhugent/Quantum-GIS.git

Regards,
Marco



On 11.02.2012 18:33, Matt Conway wrote:
> Yes, it's a transparent raster. Is the work in raster_resampling ready 
> to use, or need I try something else?
> Thanks,
> Matt
>
> On 02/11/2012 02:12 AM, Marco Hugentobler wrote:
>> Hi Matt
>>
>> Is the raster image transparent? It is a known issue that there is 
>> banding with transparent rasters (because the raster is printed in 
>> several pieces with a small overlap). There is work underway in the 
>> raster_resampling branch to draw the pieces without overlap (in fact, 
>> the credits go to Radim here since it is only possible to avoid the 
>> overlaps after his raster provider redesign).
>>
>> If the raster is fully opaque, it might be a different issue.
>>
>> Regards,
>> Marco
>>
>> On 11.02.2012 08:26, Matt Conway wrote:
>>> Hi,
>>> I'm using a GeoTIFF with a color map, and when I use print composer 
>>> to export I get banding across the image if I set the quality above 
>>> 100dpi. Any thoughts?
>>>
>>> I'm using QGIS 1.9.90 nightly (updated about 4 hours ago) on Ubuntu 
>>> 11.10.
>>>
>>> Image: http://www.flickr.com/photos/mattwigway/6855286347/
>>>
>>> Thanks,
>>> Matt
>>>
>>>
>>> _______________________________________________
>>> Qgis-user mailing list
>>> Qgis-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>>
>> -- 
>> Dr. Marco Hugentobler
>> Sourcepole -  Linux&  Open Source Solutions
>> Churerstrasse 22, CH-8808 Pfäffikon SZ, Switzerland
>> marco.hugentobler at sourcepole.ch  http://www.sourcepole.ch
>> Technical Advisor QGIS Project Steering Committee
>>
>>
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>


-- 
Dr. Marco Hugentobler
Sourcepole -  Linux&  Open Source Solutions
Churerstrasse 22, CH-8808 Pfäffikon SZ, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee

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