Release2.1.0

Released Aug 23, 2012

(Packaged from a25aac8)

• Feature-level compositing (comp-op) for all symbolizers (except building) in AGG and Cairo renderers (#1409)

• Style-level compositing (comp-op) (#1409) and style-level opacity for AGG renderer (#314)

• New experimental framework for image manipulation called image-filters to allow things to be done across entire layer canvas like burring (#1412)

• Support for recoloring stroke, fill, and opacity of SVG files (#1410 / #659)

• Support for data-driven transform expressions (#664)

• New support for offsetting geometries / parallel lines in line_symbolizer (#927/#1269)

• New support for clipping geometries - now default enabled on all symbolizers (#1116)

• Framework for chainable geometry transformations (called vertex_converters) so that you can do things like clip, smooth, and offset at the same time (#927)

• WKT parsing now is more robust and supports multi-geometries (#745)

• New support for outputting WKT/WKB/GeoJSON/SVG from mapnik.Geometry objects (#1411)

• New experimental python datasource plugin (#1337)

• New experimental geojson datasource plugin using in-memory rtree indexing (#1413)

• Cairo rendering is now much more similiar to AGG rendering as cairo backend now supports scale_factor (#1280) and other fixes have landed (#1343, #1233, #1344, #1242, #687, #737, #1006, #1071)

• mapnik::Feature objects and datasource plugins now use a Context to store attribute schemas to reduce the memory footprint of features (#834)

• Added Stroke miterlimit (#786)

• Python: exposed Map background_image (and aliased background to background_color)

• Python: exposed BuildingSymbolizer

• Support in the CSV plugin for reading JSON encoded geometries (#1392)

• Increased grid encoding performance (#1315)

• Added support for setting opacity dynamically on images in polygon pattern and markers symbolizers

• Added support for filtering on a features geometry type, either point, linestring, 'polygon, or collectionusing the expression keyword of[mapnik::geometry_type]` (#546)

• MarkersSymbolizer width and height moved to expressions (#1102)

• PostGIS: Added 'simplify_geometries' option - will trigger ST_Simplify on geometries before returning to Mapnik (#1179)

• Improved error feedback for invalid values passed to map.query_point

• Fixed rendering of thin svg lines (#1129)

• Improved logging/debugging system with release logs and file redirection (https://github.com/mapnik/mapnik/wiki/Runtime-Logging) (#937 and partially #986, #467)

• GDAL: allow setting nodata value on the fly (will override value if nodata is set in data) (#1161)

• GDAL: respect nodata for paletted/colormapped images (#1160)

• PostGIS: Added a new option called 'autodetect_key_field' (by default false) that if true will trigger autodetection of a given tables' primary key allowing for feature.id() to represent globally unique ids. This option has no effect if the user has not manually supplied the 'key_field' option. (#804)

• Cairo: Add full rendering support for markers to match AGG renderer functionality (#1071)

• Fix Markers rendering so that ellipse height/width units are pixels (previously were unintentionally radii) (#1134)

• Added 'ignore-placement` attribute to markers-symbolizer (#1135)

• Removed PointDatasource - use more robust MemoryDatasource instead (#1032)

• SQLite - Added support for !intersects! token in sql subselects (#809) allow custom positioning of rtree spatial filter.

• New CSV plugin - reads tabular files - autodetecting geo columns, newlines, and delimiters. Uses in-memory featureset for fast rendering and is not designed for large files (#902)

• Fixed bug in shield line placement when dx/dy are used to shift the label relative to the placement point (Matt Amos) (#908)

• Added <layer_by_sql> parameter in OGR plugin to select a layer by SQL query (besides name or index): see http://www.gdal.org/ogr/ogr_sql.html for specifications (kunitoki) (#472)

• Added support for output maps as tiff files (addresses #967 partially)

• Added support for justify-alignment=auto. This is the new default. (#1125)