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.rahko...@mmmtike.fi
<mailto:jukka.rahko...@mmmtike.fi>>
Brylie Oxley <brylie@...> 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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