def copy_layer(obj):
lyr = Layer(obj.name)
if hasattr(obj, 'title'):
lyr.title = obj.title
else:
lyr.title = ''
if hasattr(obj, 'abstract'):
lyr.abstract = obj.abstract
else:
lyr.abstract = ''
# only if mapnik version supports it
# http://trac.mapnik.org/ticket/503
if hasattr(obj, 'tolerance'):
lyr.tolerance = obj.tolerance
if hasattr(obj, 'toleranceunits'):
lyr.toleranceunits = obj.toleranceunits
lyr.srs = obj.srs
if hasattr(obj, 'minzoom'):
lyr.minzoom = obj.minzoom
if hasattr(obj, 'maxzoom'):
lyr.maxzoom = obj.maxzoom
lyr.active = obj.active
lyr.queryable = obj.queryable
lyr.clear_label_cache = obj.clear_label_cache
lyr.datasource = obj.datasource
if hasattr(obj, 'wmsdefaultstyle'):
lyr.wmsdefaultstyle = obj.wmsdefaultstyle
if hasattr(obj, 'wmsextrastyles'):
lyr.wmsextrastyles = obj.wmsextrastyles
if hasattr(obj, 'meta_style'):
lyr.meta_style = obj.meta_style
if hasattr(lyr, 'wms_srs'):
lyr.wms_srs = obj.wms_srs
return lyr
def get_band_layer(self, band_num):
lyr = Layer('Tiff Layer')
lyr.datasource = Gdal(file=self.raster.name,
band=band_num,
nodata=0,
shared=True)
lyr.srs = self.srs
lyr.styles.append(self.get_band_style_name(band_num))
return lyr
t.label_placement = label_placement.POINT_PLACEMENT
s1 = Style()
r1 = Rule()
r1.symbols.append(t)
r1.filter = f
s1.rules.append(r1)
m.append_style('Text', s1)
s = Style()
r = Rule()
r.symbols.append(PolygonSymbolizer(Color('#f2eff9')))
r.symbols.append(LineSymbolizer(Color('rgb(50%,50%,50%)'), 0.1))
s.rules.append(r)
m.append_style('My Style', s)
lyr = Layer('france', proj4)
import os
shp = Shapefile(base='.', file='departement')
lyr.datasource = shp
#lyr.datasource = SQLite(base=os.getcwd(), file = sqlitedatabase, table = tablename, geometry_field = 'Geometry', key_field = 'ID_GEOFLA', extent = shp_extent, wkb_format = 'spatialite')
lyr.styles.append('My Style')
lyr.styles.append('Text')
m.layers.append(lyr)
m.zoom_to_box(lyr.envelope())
file_formats = {
'svg': cairo.SVGSurface,
def get_layers(self):
lyr = Layer('Tiff Layer')
lyr.datasource = Gdal(file=self.raster.name, nodata=0, shared=True)
lyr.srs = self.srs
lyr.styles.append(self.style_name)
return [lyr]
import mapnik
from mapnik import PostGIS, Layer
m = mapnik.Map(256, 256)
s = mapnik.Style()
r = mapnik.Rule()
ptsym = mapnik.PointSymbolizer()
r.symbols.append(ptsym)
s.rules.append(r)
m.append_style('My Style', s)
lyr = Layer('PostGIS')
ds = PostGIS(host='database.lambnik.azavea.com',
user='******', password='******',
dbname='lambnik-test', table='pwd_inlets')
lyr.datasource = ds
lyr.styles.append('My Style')
m.layers.append(lyr)
m.zoom_all()
mapnik.render_to_file(m, 'test.png', 'png')
