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On 03/19/2012 10:04 AM, G. Allegri wrote:
<blockquote
cite="mid:CAB4g1=xkAsp9NMocp6R32zwuRzs+FW3PyKub4EpG5_1nE_gGLw@mail.gmail.com"
type="cite">I agree with Jukka.
<div>Working to a lower level of binding (through GDAL/OGR) would
let other foss software leavarage the improvements.</div>
<div>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.</div>
<div>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...</div>
</blockquote>
<br>
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.<br>
<br>
librsvg seems to me the best choice for the low level library to
use.<br>
<br>
gdal-dev cc'd.<br>
<br>
Ari<br>
<br>
<blockquote
cite="mid:CAB4g1=xkAsp9NMocp6R32zwuRzs+FW3PyKub4EpG5_1nE_gGLw@mail.gmail.com"
type="cite">
<div><br>
</div>
<div>giovanni<br>
<br>
<div class="gmail_quote">2012/3/19 Jukka Rahkonen <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:jukka.rahkonen@mmmtike.fi">jukka.rahkonen@mmmtike.fi</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">Brylie Oxley <a class="moz-txt-link-rfc2396E" href="mailto:brylie@..."><brylie@...></a> writes:<br>
<br>
><br>
> Hello,<br>
> My name is Brylie Oxley. I am a student at Sierra
College in Nevada<br>
> City, CA. I would like to apply for the GSoC program.<br>
><br>
> I have been studying GIS at Sierra College, where the
courses focus on<br>
> proprietary tools. For libre GIS tools to be viable
options, we need<br>
> high quality cartographic tools. This is where I see
Inkscape as an<br>
> EXCELLENT candidate.<br>
><br>
> I would like to make an extension for QGIS and/or
Inkscape that would<br>
> enable us to send data from QGIS directly to
Inkscape. It would also be<br>
> nice to be able to have Inkscape leverage the QGIS
API to import<br>
> data/layers into a cartographic project.<br>
><br>
> I am glad to get any feedback regarding users'
experiences sharing data<br>
> between these two programs. I would also like to know
what some of the<br>
> components are that I can leverage to create a
bridging<br>
> extension/improved cartographic interface for QGIS.<br>
><br>
> Thank you for your time and consideration,<br>
> Brylie Oxley<br>
<br>
</div>
There is heavy work going on with GDAL PDF driver <a
moz-do-not-send="true"
href="http://gdal.org/frmt_pdf.html" target="_blank">http://gdal.org/frmt_pdf.html</a><br>
Mapserver can already make georeferenced PDF files like this
with the trunk<br>
version of GDAL <a moz-do-not-send="true"
href="http://latuviitta.org/documents/Lahti_geospat.pdf"
target="_blank">http://latuviitta.org/documents/Lahti_geospat.pdf</a><br>
Reading the geospatial info of that certain PDF needs
TerraGo Toolbar which is<br>
an add-on to Adobe Acrobat reader. Here is another PDF
output example<br>
<a moz-do-not-send="true"
href="http://latuviitta.org/documents/raitiovaunulinjat.pdf"
target="_blank">http://latuviitta.org/documents/raitiovaunulinjat.pdf</a><br>
It is made with OpenJUMP derivative SkyJUMP and it
demostrates using vector<br>
layers on to of a raster layer (tram lines in this case).
User can toggle the<br>
layer visibility at least with Adobe Acrobat Reader. I am
not sure if GDAL can<br>
do such layered output yet. However, I have a feeling that
GDAL may soon be able<br>
to support direct conversion of raster files with OGR vector
file overlays into<br>
layered and georeferenced PDF files. See recent PDF commits
by Evan Rouault at<br>
<a moz-do-not-send="true"
href="http://trac.osgeo.org/gdal/timeline" target="_blank">http://trac.osgeo.org/gdal/timeline</a><br>
<br>
Perhaps that work will help you with the QGIS to Inkcape
work flow. At least it<br>
might be good to study what could be done by feeding GDAL
from QGIS before<br>
dublicating those functionalities into QGIS.<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
-Jukka Rahkonen-<br>
</font></span>
<div class="HOEnZb">
<div class="h5"><br>
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</blockquote>
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