[Qgis-user] Re: QGIS + Inkscape

[Ari Jolma]

On 03/19/2012 10:04 AM, G. Allegri wrote:
> I agree with Jukka.
> Working to a lower level of binding (through GDAL/OGR) would let other 
> foss software leavarage the improvements.
> I don't know Inkscape very much, but I've tried to import the latter 
> example from Jukka (the multilayer PDF) and it keeps the layers correctly.
> Working on the GDAL level is probably harder then doing the work on 
> the Python level directly between Qgis and Inkscape, but I feel it 
> would be far most used and useful to improve the GDAL PDF support...

I agree too, but would like to see SVG better supported in GDAL. Right 
now there seems to be only read support. Some years ago I made some 
tests using librsvg and GDAL and writing glue code in Perl. It works and 
the basics are not difficult but with styles and rasters it gets more 
complicated.

librsvg seems to me the best choice for the low level library to use.

gdal-dev cc'd.

Ari

>
> giovanni
>
> 2012/3/19 Jukka Rahkonen <jukka.rahkonen at mmmtike.fi 
> <mailto:jukka.rahkonen at mmmtike.fi>>
>
>     Brylie Oxley <brylie at ...> writes:
>
>     >
>     > Hello,
>     > My name is Brylie Oxley. I am a student at Sierra College in Nevada
>     > City, CA. I would like to apply for the GSoC program.
>     >
>     > I have been studying GIS at Sierra College, where the courses
>     focus on
>     > proprietary tools. For libre GIS tools to be viable options, we need
>     > high quality cartographic tools. This is where I see Inkscape as an
>     > EXCELLENT candidate.
>     >
>     > I would like to make an extension for QGIS and/or Inkscape that
>     would
>     > enable us to send data from QGIS directly to Inkscape. It would
>     also be
>     > nice to be able to have Inkscape leverage the QGIS API to import
>     > data/layers into a cartographic project.
>     >
>     > I am glad to get any feedback regarding users' experiences
>     sharing data
>     > between these two programs. I would also like to know what some
>     of the
>     > components are that I can leverage to create a bridging
>     > extension/improved cartographic interface for QGIS.
>     >
>     > Thank you for your time and consideration,
>     > Brylie Oxley
>
>     There is heavy work going on with GDAL PDF driver
>     http://gdal.org/frmt_pdf.html
>     Mapserver can already make georeferenced PDF files like this with
>     the trunk
>     version of GDAL http://latuviitta.org/documents/Lahti_geospat.pdf
>     Reading the geospatial info of that certain PDF needs TerraGo
>     Toolbar which is
>     an add-on to Adobe Acrobat reader. Here is another PDF output example
>     http://latuviitta.org/documents/raitiovaunulinjat.pdf
>     It is made with OpenJUMP derivative SkyJUMP and it demostrates
>     using vector
>     layers on to of a raster layer (tram lines in this case). User can
>     toggle the
>     layer visibility at least with Adobe Acrobat Reader. I am not sure
>     if GDAL can
>     do such layered output yet. However, I have a feeling that GDAL
>     may soon be able
>     to support direct conversion of raster files with OGR vector file
>     overlays into
>     layered and georeferenced PDF files. See recent PDF commits by
>     Evan Rouault at
>     http://trac.osgeo.org/gdal/timeline
>
>     Perhaps that work will help you with the QGIS to Inkcape work
>     flow. At least it
>     might be good to study what could be done by feeding GDAL from
>     QGIS before
>     dublicating those functionalities into QGIS.
>
>
>     -Jukka Rahkonen-
>
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