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+ make interface to datasource attributes, featuresets, and features more pythonicby adding feature.envelope() method returning combined extent of geometries, ds.fields() method returning list of names, and featureset.features() which returns list of all features in featurset - now accessible via datasource.all_features()- closes #283, #280, #171
+ improve error reporting of gdal plugin and avoid boost filesystem check - reverts r1044 and addresses #337
+ensure relative paths to symbols and datasources in xml are based on working directory of xml file, added 'paths_from_xml' parameter that is true by default but can be made false to maintain previous behavior - closes #326 (has no effect on load_map_from_string)
See INSTALL file for installation instructions Mapnik is an OpenSource C++/Python toolkit for developing GIS (Geographic Information Systems) applications. At the core is a C++ shared library providing algorithms/patterns for spatial data access and visualization. Essentially a collection of geographic objects (map, layer, datasource, feature, geometry), the library doesn't rely on "windowing systems" and can be deployed in any server environment. It is intended to play fair in a multi-threaded environment and is aimed primarily, but not exclusively, at web-based development. High-level Python bindings (boost.python) facilitate rapid application development, targeting zope3, django etc. Mapnik is a free software and is released under LGPL (GNU Lesser General Public Licence) (see COPYING) For further information see: - http://mapnik.org - http://trac.mapnik.org - http://ohloh.net/p/mapnik
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