Package mapnik

Wrapper around CreateDatasource.

Create a Mapnik Datasource using a dictionary of parameters.

Keywords must include:

  type='plugin_name' # e.g. type='gdal'

See the convenience factory methods of each input plugin for
details on additional required keyword arguments.

Create a Shapefile Datasource.

Required keyword arguments:
  file -- path to shapefile without extension

Optional keyword arguments:
  base -- path prefix (default None)
  encoding -- file encoding (default 'utf-8')

>>> from mapnik import Shapefile, Layer
>>> shp = Shapefile(base='/home/mapnik/data',file='world_borders') 
>>> lyr = Layer('Shapefile Layer')
>>> lyr.datasource = shp

Create a PostGIS Datasource.

Required keyword arguments:
  dbname -- database name to connect to
  table -- table name or subselect query

Optional db connection keyword arguments:
  user -- database user to connect as (default: see postgres docs)
  password -- password for database user (default: see postgres docs)
  host -- portgres hostname (default: see postgres docs)
  port -- postgres port (default: see postgres docs)
  initial_size -- integer size of connection pool (default 1)
  max_size -- integer max of connection pool (default 10)

Optional table-level keyword arguments:
  extent -- manually specified data extent (comma delimited string, default None)
  estimate_extent -- boolean, direct PostGIS to use the faster, less accurate estimate_extent() over extent() (default False)
  row_limit -- integer limit of rows to return (default 0)
  cursor_size -- integer size of cursor to fetch (default 0)
  geometry_field -- specify geometry field (default first entry in geometry_columns)
  multiple_geometries -- boolean, direct the Mapnik wkb reader to interpret as multigeometries (default False)

>>> from mapnik import PostGIS, Layer
>>> params = dict(dbname='mapnik',table='osm',user='postgres',password='gis')
>>> params['estimate_extent'] = False
>>> params['extent'] = '-20037508,-19929239,20037508,19929239'
>>> postgis = PostGIS(**params)
>>> lyr = Layer('PostGIS Layer')
>>> lyr.datasource = postgis

Create a Raster (Tiff) Datasource.

Required keyword arguments:
  file -- path to stripped or tiled tiff
  lox -- lowest (min) x/longitude of tiff extent
  loy -- lowest (min) y/latitude of tiff extent
  hix -- highest (max) x/longitude of tiff extent
  hiy -- highest (max) y/latitude of tiff extent

Hint: lox,loy,hix,hiy make a Mapnik Envelope

Optional keyword arguments:
  base -- path prefix (default None)

>>> from mapnik import Raster, Layer
>>> raster = Raster(base='/home/mapnik/data',file='elevation.tif',lox=-122.8,loy=48.5,hix=-122.7,hiy=48.6) 
>>> lyr = Layer('Tiff Layer')
>>> lyr.datasource = raster

Create a GDAL Raster Datasource.

Required keyword arguments:
  file -- path to GDAL supported dataset

Optional keyword arguments:
  base -- path prefix (default None)

>>> from mapnik import Gdal, Layer
>>> dataset = Gdal(base='/home/mapnik/data',file='elevation.tif') 
>>> lyr = Layer('GDAL Layer from TIFF file')
>>> lyr.datasource = dataset

Create a OGR Vector Datasource.

Required keyword arguments:
  file -- path to OGR supported dataset
  layer -- layer to use within datasource

Optional keyword arguments:
  base -- path prefix (default None)
  encoding -- file encoding (default 'utf-8')
  multiple_geometries -- boolean, direct the Mapnik wkb reader to interpret as multigeometries (default False)

>>> from mapnik import Ogr, Layer
>>> datasource = Ogr(base='/home/mapnik/data',file='rivers.geojson',layer='OGRGeoJSON') 
>>> lyr = Layer('OGR Layer from GeoJSON file')
>>> lyr.datasource = datasource

Create a SQLite Datasource.

Required keyword arguments:
  file -- path to SQLite database file
  table -- table name or subselect query

Optional keyword arguments:
  base -- path prefix (default None)
  encoding -- file encoding (default 'utf-8')
  extent -- manually specified data extent (comma delimited string, default None)
  metadata -- name of auxillary table containing record for table with xmin, ymin, xmax, ymax, and f_table_name
  geometry_field -- name of geometry field (default 'the_geom')
  key_field -- name of primary key field (default 'OGC_FID')
  row_offset -- specify a custom integer row offset (default 0)
  row_limit -- specify a custom integer row limit (default 0)
  wkb_format -- specify a wkb type of 'spatialite' (default None)
  multiple_geometries -- boolean, direct the Mapnik wkb reader to interpret as multigeometries (default False)
  use_spatial_index -- boolean, instruct sqlite plugin to use Rtree spatial index (default True)

>>> from mapnik import SQLite, Layer
>>> sqlite = SQLite(base='/home/mapnik/data',file='osm.db',table='osm',extent='-20037508,-19929239,20037508,19929239') 
>>> lyr = Layer('SQLite Layer')
>>> lyr.datasource = sqlite

CreateDatasource( (dict)arg1) -> Datasource :

    C++ signature :
        boost::shared_ptr<mapnik::datasource> CreateDatasource(boost::python::dict)

Describe( (Datasource)arg1) -> str :

    C++ signature :
        std::string Describe(boost::shared_ptr<mapnik::datasource>)

Filter( (str)arg1) -> Filter :

    C++ signature :
        boost::shared_ptr<mapnik::filter<mapnik::feature<mapnik::geometry<mapnik::vertex<double, 2> >, boost::shared_ptr<mapnik::raster> > > > Filter(std::string)

forward_( (Coord)arg1, (Projection)arg2) -> Coord :

    C++ signature :
        mapnik::coord<double, 2> forward_(mapnik::coord<double, 2>,mapnik::projection)

forward_( (Envelope)arg1, (Projection)arg2) -> Envelope :

    C++ signature :
        mapnik::Envelope<double> forward_(mapnik::Envelope<double>,mapnik::projection)

inverse_( (Coord)arg1, (Projection)arg2) -> Coord :

    C++ signature :
        mapnik::coord<double, 2> inverse_(mapnik::coord<double, 2>,mapnik::projection)

inverse_( (Envelope)arg1, (Projection)arg2) -> Envelope :

    C++ signature :
        mapnik::Envelope<double> inverse_(mapnik::Envelope<double>,mapnik::projection)

load_map( (Map)arg1, (str)arg2 [, (bool)arg3]) -> None :

    C++ signature :
        void load_map(mapnik::Map {lvalue},std::string [,bool])

load_map_from_string( (Map)arg1, (str)arg2 [, (bool)arg3]) -> None :

    C++ signature :
        void load_map_from_string(mapnik::Map {lvalue},std::string [,bool])

    Get the Mapnik version number

    C++ signature :
        unsigned int mapnik_version()

Returns: int :

render( (Map)arg1, (Image)arg2, (int)arg3, (int)arg4) -> None :
    
    Render Map to an AGG Image32 using offsets
    
    Usage:
    >>> from mapnik import Map, Image, render, load_map
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile.xml')
    >>> im = Image(m.width,m.height)
    >>> render(m,im,1,1)
    
    

    C++ signature :
        void render(mapnik::Map,mapnik::Image32 {lvalue},unsigned int,unsigned int)

render( (Map)arg1, (Image)arg2) -> None :
    
    Render Map to an AGG Image32
    
    Usage:
    >>> from mapnik import Map, Image, render, load_map
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile.xml')
    >>> im = Image(m.width,m.height)
    >>> render(m,im)
    
    

    C++ signature :
        void render(mapnik::Map,mapnik::Image32 {lvalue})

render( (Map)arg1, (object)arg2, (int)arg3, (int)arg4) -> None :
    
    Render Map to Cairo Surface using offsets
    
    Usage:
    >>> from mapnik import Map, render, load_map
    >>> from cairo import SVGSurface
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile.xml')
    >>> surface = SVGSurface('image.svg', m.width, m.height)
    >>> render(m,surface,1,1)
    
    

    C++ signature :
        void render(mapnik::Map,PycairoSurface*,unsigned int,unsigned int)

render( (Map)arg1, (object)arg2) -> None :
    
    Render Map to Cairo Surface
    
    Usage:
    >>> from mapnik import Map, render, load_map
    >>> from cairo import SVGSurface
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile.xml')
    >>> surface = SVGSurface('image.svg', m.width, m.height)
    >>> render(m,surface)
    
    

    C++ signature :
        void render(mapnik::Map,PycairoSurface*)

render( (Map)arg1, (object)arg2, (int)arg3, (int)arg4) -> None :
    
    Render Map to Cairo Context using offsets
    
    Usage:
    >>> from mapnik import Map, render, load_map
    >>> from cairo import SVGSurface, Context
    >>> surface = SVGSurface('image.svg', m.width, m.height)
    >>> ctx = Context(surface)
    >>> load_map(m,'mapfile.xml')
    >>> render(m,context,1,1)
    
    

    C++ signature :
        void render(mapnik::Map,PycairoContext*,unsigned int,unsigned int)

render( (Map)arg1, (object)arg2) -> None :
    
    Render Map to Cairo Context
    
    Usage:
    >>> from mapnik import Map, render, load_map
    >>> from cairo import SVGSurface, Context
    >>> surface = SVGSurface('image.svg', m.width, m.height)
    >>> ctx = Context(surface)
    >>> load_map(m,'mapfile.xml')
    >>> render(m,context)
    
    

    C++ signature :
        void render(mapnik::Map,PycairoContext*)

render_tile_to_file( (Map)arg1, (int)arg2, (int)arg3, (int)arg4, (int)arg5, (str)arg6, (str)arg7) -> None :
    
    TODO
    
    

    C++ signature :
        void render_tile_to_file(mapnik::Map,unsigned int,unsigned int,unsigned int,unsigned int,std::string,std::string)

render_to_file( (Map)arg1, (str)arg2, (str)arg3) -> None :
    
    Render Map to file using explicit image type
    
    Usage:
    >>> from mapnik import Map, render_to_file, load_map
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile.xml')
    >>> render_to_file(m,'image8bit.png','png256')
    >>> render_to_file(m,'image32bit.png','png')
    
    

    C++ signature :
        void render_to_file(mapnik::Map,std::string,std::string)

render_to_file( (Map)arg1, (str)arg2) -> None :
    
    Render Map to file (type taken from file extension)
    
    Usage:
    >>> from mapnik import Map, render_to_file, load_map
    >>> m = Map(256,256)
    >>> render_to_file(m,'image.jpeg')
    
    

    C++ signature :
        void render_to_file(mapnik::Map,std::string)

save_map( (Map)arg1, (str)arg2) -> None :
    
    Save Map object to XML file
    
    Usage:
    >>> from mapnik import Map, load_map, save_map
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile_wgs84.xml')
    >>> m.srs
    '+proj=latlong +datum=WGS84'
    >>> m.srs = '+init=espg:3395'
    >>> save_map(m,'mapfile_mercator.xml')
    
    

    C++ signature :
        void save_map(mapnik::Map,std::string)

scale_denominator( (Map)arg1, (bool)arg2) -> float :
    
    Return the Map Scale Denominator.
    Also available as Map.scale_denominator()
    
    Usage:
    
    >>> from mapnik import Map, Projection, scale_denominator, load_map
    >>> m = Map(256,256)
    >>> load_map(m,'mapfile.xml')
    >>> scale_denominator(m,Projection(m.srs).geographic)
    
    

    C++ signature :
        double scale_denominator(mapnik::Map,bool)

fonts

Value:

['/usr/local/lib/mapnik/fonts/DejaVuSans-Bold.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSans-BoldOblique.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSans-ExtraLight.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSans-Oblique.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSans.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSansCondensed-Bold.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSansCondensed-BoldOblique.ttf', '/usr/local/lib/mapnik/fonts/DejaVuSansCondensed-Oblique.ttf', ...