[Qgis-developer] Announcing raster-pipes-2 branch for testing

[Marco Hugentobler]

Hi Tim

Yes, mbtiles would be cool. I've decided to go with vrt/overview for now 
because mbtiles need a very recent GDAL. But mbtiles could be an 
additional option in future (especially interesting for mobile devices).

Regards,
Marco

On 18.07.2012 22:52, Tim Sutton wrote:
> Hi
>
> On Wed, Jul 18, 2012 at 9:12 PM, Etienne Tourigny
> <etourigny.dev at gmail.com> wrote:
>> Noticed a few issues with the save dialog
>>
>> 1) "format" drop-down is empty
>> 2) cannot select a new file
>> 3) segfault when saving to an existing file
>> 4) It would be nice to have that action in the legend contextual menu,
>> like for vector layers.
>>
> It would be really awesome to save those tiles straight into an
> mbtiles sqlite data store too - a nice way to turn an online resource
> into a portable fast local copy.
>
> Regards
>
> Tim
>
>> regards,
>> Etienne
>>
>> On Wed, Jul 18, 2012 at 3:59 PM, Etienne Tourigny
>> <etourigny.dev at gmail.com> wrote:
>>> That's great news!
>>>
>>> Concerning raster saving - will there be a mechanism for compressing files?
>>> It would be great if default compression schemes could be chosen for
>>> different file types, and an option at save time - sort of like image
>>> editors.
>>>
>>> I had trouble building it with external spatialite, could only get it
>>> to compile with cmake -DWITH_INTERNAL_SPATIALITE=TRUE - does this
>>> require a special version of spatialite?
>>>
>>> regards,
>>> Etienne
>>>
>>> On Wed, Jul 18, 2012 at 12:13 PM, Marco Hugentobler
>>> <marco.hugentobler at sourcepole.ch> wrote:
>>>> Hi devs
>>>>
>>>> I'd like to announce the branch 'raster-pipes-2' in Radims repository
>>>> https://github.com/blazek/Quantum-GIS for testing.
>>>> Radim did a great job in refactoring the process of reading / resampling /
>>>> reprojecting / displaying / modifying raster layers. Every step is now a
>>>> subclass of QgsRasterInterface, with the advantage that several steps can be
>>>> chained in a QgsRasterPipe. Like that, the raster functionality is nicely
>>>> separated into different classes and it is easy to add/remove elements in
>>>> the pipe. The iteration over the raster parts is controlled by
>>>> QgsRasterIterator (because for high-resolution prints or analysis on large
>>>> datasets, it is impossible to keep everything in memory at once).
>>>>
>>>> Please report any issue you find in the branch to the developer mailing
>>>> list.
>>>>
>>>> Besides the changes in code architecture, there is also a new feature in the
>>>> raster-pipes-2 branch. It is now possible to write through
>>>> QgsRasterDataProvider (currently only supported by the gdal provider). There
>>>> is a 'save as...' function also for rasters now (though it is not 100%
>>>> complete at the moment). There is the option to save a raster in one file or
>>>> in tiles (the tiles are then saved in one directory and vrt / pyramides are
>>>> automatically created. Very usefull for saving the contents of a WMS layer).
>>>>
>>>> Regards,
>>>> Marco
>>>>
>>>> --
>>>> Dr. Marco Hugentobler
>>>> Sourcepole -  Linux & Open Source Solutions
>>>> Weberstrasse 5, CH-8004 Zürich, Switzerland
>>>> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
>>>> Technical Advisor QGIS Project Steering Committee
>>>>
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>


-- 
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