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

Tim Sutton lists at linfiniti.com
Fri Jul 20 13:11:07 PDT 2012 

Hi

On Fri, Jul 20, 2012 at 10:07 PM, Etienne Tourigny
<etourigny.dev at gmail.com> wrote:

>
>>One thing that would be really nice is to have
>> some default profiles:
>>
>> - options for maximum read performance regardless of disk space
>> - options for minumum file size regardless of performance
>> - options for 'middle of the road' between the above two
>
> would you have these options for all file types? it could get a little
> complex, but worth the effort. For now I am implementing 1 default for
> each driver, which can be defined by the user.
>

I was thinking just for tiff as I think it is the most generically used.

Regards

Tim

> Etienne
>
>>
>> Regards
>>
>> Tim
>>
>>
>>>>
>>>> I have granted you write access, please work directly in raster-pipes-2.
>>>
>>> thanks
>>> Etienne
>>>
>>>>
>>>> Radim
>>>>
>>>>> 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)
>>>>>> ==============================================
>>>>>> Please do not email me off-list with technical
>>>>>> support questions. Using the lists will gain
>>>>>> more exposure for your issues and the knowledge
>>>>>> surrounding your issue will be shared with all.
>>>>>>
>>>>>> Visit http://linfiniti.com to find out about:
>>>>>>  * QGIS programming and support services
>>>>>>  * Mapserver and PostGIS based hosting plans
>>>>>>  * FOSS Consulting Services
>>>>>> Skype: timlinux
>>>>>> Irc: timlinux on #qgis at freenode.net
>>>>>> ==============================================
>>>>> _______________________________________________
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>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
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>>
>>
>>
>> --
>> Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
>> ==============================================
>> Please do not email me off-list with technical
>> support questions. Using the lists will gain
>> more exposure for your issues and the knowledge
>> surrounding your issue will be shared with all.
>>
>> Visit http://linfiniti.com to find out about:
>>  * QGIS programming and support services
>>  * Mapserver and PostGIS based hosting plans
>>  * FOSS Consulting Services
>> Skype: timlinux
>> Irc: timlinux on #qgis at freenode.net
>> ==============================================



-- 
Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
==============================================
Please do not email me off-list with technical
support questions. Using the lists will gain
more exposure for your issues and the knowledge
surrounding your issue will be shared with all.

Visit http://linfiniti.com to find out about:
 * QGIS programming and support services
 * Mapserver and PostGIS based hosting plans
 * FOSS Consulting Services
Skype: timlinux
Irc: timlinux on #qgis at freenode.net
==============================================

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