I'm running into a pair of problems with mapnik on Debian.
I have been using the packaged libmapnik, but it lacks the
mapnik.Image.open function that's present in trunk and available on
another system I have access to, with a trunk build done by somebody
else. To get a version with that function, I've been trying to follow
the build instructions here:
http://wiki.openstreetmap.org/index.php/Mapnik/Installation
I've done this twice, each time with varying results. The first time,
I got mapnik to build and install all the way through, but when I
attempted to import the module in python, I would get this error:
undefined symbol:
_ZN5boost6python9converter8registry6insertEPFPvP7_objectEPFvS5_PNS1_30rvalue_from_python_stage1_dataEENS0_9type_infoEPFPK11_typeobjectvE
According to a fairly old message from mapnik-devel, I should simply
try to rebuild:
http://lists.berlios.de/pipermail/mapnik-devel/2006-December/000081.html
The problem is that the contents of /usr/lib are different from what's
listed in the symlink step on the OSM instructions, so I've been sort
of guessing what to link to what. The first time through, I installed
a bunch of newer libboost packages (1.35, *-dev) but for some reason
those seemed to conflict with libbboost_python, preventing its
installation via apt and even removing it when it was there.
The second time through, I stuck to the unnumbered ones, e.g. apt-get
install libboost-python-dev which I think are 1.33.
Now I get a build error and no successful install
src/datasource_cache.cpp: In static member function ‘static void
mapnik::datasource_cache::register_datasources(const std::string&)’:
src/datasource_cache.cpp:128: error: invalid use of ‘class
boost::filesystem::path’
I'd rather not be messing with all this; the reason I'm trying to
build it is specifically to be able to populate a mapnik.Image object
with image data prior to the render() step, but the packaged mapnik
seemingly lacks any way to do this. Is there a way other than open() ?
Some hidden fromstring() method, possibility of peeling back the
layers, or way of passing something other than a mapnik.Image to
mapnik.render()?
What I'm trying to do is a variation of this:
http://trac.mapnik.org/ticket/184
Thanks,
-mike.
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michal migurski- [email protected]
415.558.1610
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