What's new in Mapnik 3.1.0
Jan 9, 2021
- Deprecate c++11 support and require c++14 standard
New in Mapnik 3.0.20 (Apr 12, 2018)
- Make max_image_area a datasource parameter for GDAL.
- GDAL Driver Overview Fix and Memory Reduction (#3872)
- Raster colorizer: check image bounds (#3879)
- Removed usage of `typename` in template template declarations (available in c++17) (#3882)
New in Mapnik 3.0.19 (Mar 6, 2018)
- Backported scaling of precision by polygon size (#3844)
- Backported GRID placement (#3847, #3854, #3855)
- Added missing `MAPNIK_DECL` to all `text_placement_` types
- Fixed invalid memory access if input_buffer size is zero
- Fixed handling of an empty polygon in grid_vertex_converter
- Fixed PROJ_LIB detection logic
- Default to `icu-config` for obtaining `ICU_DATA` if `u_getDataDirectory fails
New in Mapnik 3.0.18 (Feb 19, 2018)
- SVG parser - fixed logic for calculating dimensions when `width` and `height` expressed in percentage units (#3812)
- New improved `interior` placement algorithm (#3839)
- Fixed handling of an empty interior rings in `polygon_vertex_processor` (#3833)
- Fixed handling of an empty interior rings in `vertex_adapter' (#3842)(#3838)
New in Mapnik 2.2.0 (Sep 6, 2013)
- Removed 3 depedencies without loosing any functionality: `ltdl`, `cairomm` and `libsigc++` (#1804,#806,#1681)
- Added 64 bit integer support in expressions, feature ids, and the grid_renderer (#1661,#1662,#1662)
- Added the ability to disable the need for various dependencies: `proj4`, `libpng`, `libtiff`, `libjpeg`
- Added faster reprojection support between `epsg:3857` and `epsg:4326` (#1705,#1703,#1579)
- Fixed concurrency problem when using cursors in postgis plugin (#1823,#1588)
- Fixed postgres connection pool leaks when using `persist_connection=false` (#1764)
- Fixed postgres connection key to respect highest value of `max_size` and `initial_size` for any layer in map (#1599)
- Fixed potential crash in wkb parsing when postgis returns null geometry (#1843)
- Fixed blurry rendering of image and SVG icons (#1316)
- Added detection of invalid srs values when loading xml (#646)
- Added support for specifying a base_path as a third, optional argument to load_xml
- Removed muffling of projection errors while rendering (#646)
- Improved logging system (https://github.com/mapnik/mapnik/wiki/Logging)
- Added support for reading images from in memory streams (#1805)
- Optimized halo rendering. When halo radius is < 1 new method will be used automatically (#1781)
- Added `text-halo-rasterizer` property. Set to `fast` for lower quality but faster halo rendering (#1298) which matched new default method when radius is < 1.
- Added support in `shape`, `sqlite`, `geojson`, and `csv` plugin for handling non-latin characters in the paths to file-based resources (#1177)
- Fixed rendering of markers when their size is greater than the specified `spacing` value (#1487)
- Fixed handling of alpha premultiplication in image scaling (#1489)
- Optimized rendering when a style with no symbolizers is encountered (#1517)
- Optimized string handling and type conversion by removing `boost::to_lower`, `boost::trim`, and `boost::lexical_cast` usage (#1687,#1687,#1633)
- Optimized alpha preserving `hextree` method for quantization of png images (#1629)
- Faster rendering of rasters by reducing memory allocation of temporary buffers (#1516)
- Fixed some raster reprojection artifacts (#1501)
- Fixed raster alignment when width != height and raster is being scaled (#1748,#1622)
- Added support for caching rasters for re-use during rendering when styling more than once per layer (#1543)
- Improved compile speeds of the code - in some cases by up to 2x and removed need for freetype dependency when building code against mapnik (#1688, #1756)
- Removed internal rule cache on `mapnik::Map` c++ object (#1723)
- Improved the scaled rendering of various map features when using `scale_factor` > 1 (#1280,#1100,#1273,#1792,#1291,#1344,#1279,#1624,#1767,#1766)
- Added C++ api for overriding scale_denominator to enable rendering at fixed scale (#1582)
- Added Layer `buffer-size` that can be used to override Map `buffer-size` to avoid over-fetching of data that does not need to be buffered as much as other layers. Map level `buffer-size` will be default if layers do not set the option. Renamed a previously undocumented parameter by the same name that impacted clipping extent and was not needed (clipping padding should likely be a symbolizer level option) (#1566)
- Fixed potential file descriptor leaks in image readers when invalid images were encountered (#1783)
- Fixed alpha handling in the `blur` and `invert` image filters (#1541)
- Fixed error reporting in the python plugin (#1422)
- Added the ability to run tests without installing with `make test-local`
- Reduced library binary size by adding support for `-fvisibility-inlines-hidden` and `-fvisibility=hidden` (#1826,#1832)
- Added `mapnik::map_request` class, a special object to allow passing mutable map objects to renderer (#1737)
- Added the ability to use `boost::hash` on `mapnik::value` types (#1729)
- Removed obsolete `geos` plugin (functionality replaced by `csv` plugin) and unmaintained `kismet` plugin (#1809,#1833)
- Added new `mapnik-config` flags: `--all-flags`, `--defines`, `--git-describe`, `--includes`, `--dep-includes`, `--cxxflags`, `--cxx` (#1443)
- Added support for unicode strings as arguments in python bindings (#163)
- Added DebugSymbolizer which is able to render the otherwise invisible collision boxes (#1366)
- Optimized rendering by reducing overhead of using `gamma` property (#1174)
- Fixed rendering artifacts when using `polygon-gamma` or `line-gamma` equal to 0 (#761,#1763)
- Fixed and optimized the display of excessive precision of some float data in labels (#430,#1697)
- Removed the `bind` option for datasources (#1654)
- Added ability to access style list from map by (name,obj) in python (#1725)
- Added `is_solid` method to python mapnik.Image and mapnik.ImageView classes (#1728)
- Changed scale_denominator C++ interface to take scale as first argument rather than map.
- Added support for `background-image` in cairo_renderer (#1724)
- Fixed building symbolizer rendering to be fully sensitive to alpha (8b66128c892 / bc8ea1c5a7a)
- `[attr]` now returns false if attr is an empty string (#1665)
- `[attr]!=null` now returns true if attr is not null (#1642)
- Added support for DBF `Logical` type: #1614
- Added serialization of `line-offset` to save_map (#1562)
- Enabled default input plugin directory and fonts path to be set inherited from environment settings in python bindings to make it easier to run tests locally (#1594). New environment settings are: - MAPNIK_INPUT_PLUGINS_DIRECTORY - MAPNIK_FONT_DIRECTORY
- Added support for controlling rendering behavior of markers on multi-geometries `marker-multi-policy` (#1555,#1573)
- Added alternative PNG/ZLIB implementation (`miniz`) that can be enabled with `e=miniz` (#1554)
- Added support for setting zlib `Z_FIXED` strategy with format string: `png:z=fixed`
- Fixed handling of transparency level option in `octree` png encoding (#1556)
- Added ability to pass a pre-created collision detector to the cairo renderer (#1444)
- Tolerance parameter is now supported for querying datasources at a given point (#503/#1499)
- Improved detection of newlines in CSV files - now more robust in the face of mixed newline types (#1497)
- Allow style level compositing operations to work outside of featureset extents across tiled requests (#1477)
- Support for encoding `literal` postgres types as strings 69fb17cd3/#1466
- Fixed zoom_all behavior when Map maximum-extent is provided. Previously maximum-extent was used outright but now the combined layer extents will be again respected: they will be clipped to the maximum-extent if possible and only when back-projecting fails for all layers will the maximum-extent be used as a fallback (#1473)
- Compile time flag called `PLUGIN_LINKING` to allow input datasource plugins to be statically linked with the mapnik library (#249)
- Fixed `dasharray` rendering in cairo backend (#1740)
- Fixed handling of `opacity` in svg rendering (#1744)
- Fixed uneven rendering of markers along lines (#1693)
- Fixed handling of extra bytes in some shapefile fields (#1605)
- Fixed handling (finally) of null shapes and partially corrupt shapefiles (#1630,#1621)
- Added ability to re-use `mapnik::image_32` and `mapnik::grid` by exposing a `clear` method (#1571)
- Added support for writing RGB (no A) png images by using the format string of `png:t=0` (#1559)
- Added experimental support for geometry simplification at symbolizer level (#1385)