def get_styles(self):
s = Style()
r = Rule()
symbolizer = RasterSymbolizer()
r.symbols.append(symbolizer)
s.rules.append(r)
return [(self.style_name, s)]
def get_band_style(self, band_num):
s = Style()
r = Rule()
symbolizer = RasterSymbolizer()
band = self.raster.bands[band_num - 1]
colorizer = RasterColorizer()
colorizer.default_mode = mapnik.COLORIZER_LINEAR
colorizer.add_stop(band.min, mapnik.COLORIZER_LINEAR,
mapnik.Color('#000'))
colorizer.add_stop(band.max, mapnik.COLORIZER_DISCRETE,
mapnik.Color(self.band_colors[band_num - 1]))
symbolizer.colorizer = colorizer
s.comp_op = mapnik.CompositeOp.plus
r.symbols.append(symbolizer)
s.rules.append(r)
return self.get_band_style_name(band_num), s
import cairo
from mapnik import Style, Rule, Color, Filter, LineSymbolizer, PolygonSymbolizer, TextSymbolizer, label_placement, Shapefile, SQLite, Layer, Map, render, Shapefile, Expression, save_map
map_output = 'france'
m = Map(300, 300, proj4)
m.background = Color('steelblue')
t = TextSymbolizer(Expression('[CODE_DEPT]'), 'DejaVu Sans Book', 8, Color('black'))
f = Expression("[CODE_DEPT]<>'75' and [CODE_DEPT]<>'92' and [CODE_DEPT]<>'93' and [CODE_DEPT]<>'94'")
t.allow_overlap = 1
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
map_output = 'france'
m = Map(300, 300, proj4)
m.background = Color('steelblue')
t = TextSymbolizer(Expression('[CODE_DEPT]'), 'DejaVu Sans Book', 8,
Color('black'))
f = Expression(
"[CODE_DEPT]<>'75' and [CODE_DEPT]<>'92' and [CODE_DEPT]<>'93' and [CODE_DEPT]<>'94'"
)
t.allow_overlap = 1
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
def basic_chloropleth_class(s, def_filter, color = Color(255, 0, 0)):
r = Rule()
r.filter = Expression(def_filter)
r.symbols.append(PolygonSymbolizer(color))
s.rules.append(r)
return s
