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

[Etienne Tourigny]

Yes - I was also thinking about being able to define defaults for
saving rasters (default format, default compression + options per
format, tiles) which would be application-wide.

And this reusable widget could be pre-populated with these options -
and used in core as well as python plugins.  You would create an
instance of this widget, given a raster layer, and then be able to
save it.
I would see this as an expandable component inside each of the
gdaltools dialogs.

Etienne

On Thu, Jul 19, 2012 at 7:21 PM, Tim Sutton <lists at linfiniti.com> wrote:
> Hi
>
> On Fri, Jul 20, 2012 at 12:19 AM, Etienne Tourigny
> <etourigny.dev at gmail.com> wrote:
>> On Thu, Jul 19, 2012 at 4:09 PM, Marco Hugentobler
>> <marco.hugentobler at sourcepole.ch> wrote:
>>> Hi Etienne
>>>
>>> Thanks for the feedback, very much appreciated. I've fixed these issues in
>>> raster-pipes-2 branch now.
>>>
>>> There are still a few things missing in raster saving:
>>> - write colortable to output dataset
>>> - format specific options (e.g. compression)
>>> - dynamic populating of the format combo box (currently hardcoded to
>>> geotiff)
>>> - progress indication for tile based saving and possibility to cancel
>>
>> It just occurred to me that it would be a great thing to implement
>> this as a widget+class in QgisGui, so that it could be used elsewhere
>> (e.g. gdaltools, sextante).
>>
>
> You mean as a reusable widget like the crs selector? Yes that would be great!
>
> Regards
>
> Tim
>
>> Any way I can help?
>>
>>
>>>
>>> Regards,
>>> Marco
>>>
>>>
>>> On 18.07.2012 21:12, Etienne Tourigny 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.
>>>>
>>>> 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
>>>>>>
>>>>>> _______________________________________________
>>>>>> Qgis-developer mailing list
>>>>>> Qgis-developer at lists.osgeo.org
>>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>>>
>>>
>>>
>>> --
>>> 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-developer mailing list
>> Qgis-developer at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>
>
>
> --
> Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
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