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
def copy_layer(obj):
lyr = Layer(obj.name)
lyr.abstract = obj.abstract
lyr.active = obj.active
lyr.clear_label_cache = obj.clear_label_cache
lyr.datasource = obj.datasource
#lyr.maxzoom = obj.maxzoom
#lyr.minzoom = obj.minzoom
lyr.queryable = obj.queryable
lyr.srs = obj.srs
lyr.title = obj.title
if hasattr(obj,'wmsdefaultstyle'):
lyr.wmsdefaultstyle = obj.wmsdefaultstyle
if hasattr(obj,'wmsextrastyles'):
lyr.wmsextrastyles = obj.wmsextrastyles
return lyr
# conn.close()
# # print records
# xys = map(lambda vals:map(encodeAttr,vals),records)
# MultiPoint = { "type": "MultiPoint",
# "coordinates": xys
# }
# f = file(r"G:\mapnik\geojson\data.geojson",'w+')
# f.write(str(MultiPoint))
# f.close()
from mapnik import Ogr,Layer
import mapnik
datasource = Ogr(base='G:/mapnik/geojson',file='data.geojson',layer='OGRGeoJSON')
lyr = Layer('OGR Layer from GeoJSON file')
lyr.datasource = datasource
m = mapnik.Map(800, 800)
m.background = mapnik.Color('steelblue')
s = mapnik.Style()
r = mapnik.Rule()
point_symbolizer = mapnik.PointSymbolizer(mapnik.PathExpression("../point.png"))
# point_symbolizer = mapnik.PointSymbolizer("../point.png", "png", 16, 16) #为何这样用会报错？
point_symbolizer.allow_overlap = True
point_symbolizer.opacity = 0.8
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,
}
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 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 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
lyr.minzoom = obj.minzoom
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_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]
from mapnik import PolygonSymbolizer, LineSymbolizer, Rule, Style, Color, Layer, Shapefile, Map, Image, render
rule = Rule()
rule.symbols.append(PolygonSymbolizer(Color("grey")))
rule.symbols.append(LineSymbolizer(Color("black"), 0.1))
style = Style()
style.rules.append(rule)
layer = Layer("world")
layer.datasource = Shapefile(file="coastlines/land")
layer.styles.append("world")
m = Map(800, 400)
m.background = Color("white")
m.append_style("world", style)
m.layers.append(layer)
m.zoom_to_box(layer.envelope())
image = Image(800, 400)
render(m, image)
with open("test.png", "w") as image_file:
image_file.write(image.tostring("png"))
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
lyr.datasource = SQLite(base=os.getcwd(), file = sqlitedatabase, table = tablename, geometry_field = 'Geometry', key_field = 'pkuid', 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,
}
for type_format in file_formats:
print '// -- Rendering %s -----------------------------' % type_format
file_open = open('%s.%s' % (map_output, type_format), 'w')
t = TextSymbolizer('code_dept', 'DejaVu Sans Book', 8, Color('black'))
f = Filter("[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.rules.append(r)
m.append_style('My Style', s)
lyr = Layer('france', proj4)
import os
lyr.datasource = SQLite(base=os.getcwd(), file = sqlitedatabase, table = tablename, geometry_field = 'Geometry', key_field = 'pkuid', extent = '99226.000000,6049647.000000,1242375.000000,7110524.000000', 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,
}
for type_format in file_formats:
print '// -- Rendering %s -----------------------------' % type_format
file_open = open('%s.%s' % (map_output, type_format), 'w')
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')
