84 lines
2.6 KiB
Python
84 lines
2.6 KiB
Python
# $Id: rundemo.py 577 2008-01-03 11:39:10Z artem $
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#
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# This file is part of Mapnik (c++ mapping toolkit)
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# Copyright (C) 2005 Jean-Francois Doyon
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#
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# Mapnik is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# Import everything. In this case this is safe, in more complex systems, you
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# will want to be more selective.
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try:
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from mapnik import *
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except:
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print '\n\nThe mapnik library and python bindings must have been compiled and \
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installed successfully before running this script.\n\n'
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raise
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m = Map(690,690,"+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs")
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m.background = Color(255,100,100,255)
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road_style = Style()
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#Road
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road_rule = Rule()
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road_stroke = Stroke(Color('white'), 12)
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road_stroke.opacity = 0.7
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#road_stroke.line_cap = line_cap.ROUND_CAP
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#road_stroke.line_join = line_join.ROUND_JOIN
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#road_rule.filter = Filter("[CLASS] = 'CROSS'")
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road_rule.symbols.append(LineSymbolizer(road_stroke))
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road_style.rules.append(road_rule);
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#Road text
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text_symbolizer = TextSymbolizer('NAME', 'DejaVu Sans Book', 10, Color('black'))
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text_symbolizer.label_placement=label_placement.LINE_PLACEMENT
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text_symbolizer.minimum_distance = 0
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#text_symbolizer.max_char_angle_delta = 40
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#text_symbolizer.force_odd_labels = 1
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text_symbolizer.label_spacing = 60
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text_symbolizer.label_position_tolerance = 50
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text_symbolizer.minimum_distance = 5
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text_symbolizer.avoid_edges = 0
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text_symbolizer.halo_fill = Color('yellow')
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text_symbolizer.halo_radius = 1
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road_rule = Rule()
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#road_rule.filter = Filter("[CLASS] = 'CROSS'")
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road_rule.symbols.append(text_symbolizer)
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road_style.rules.append(road_rule)
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road_layer = Layer('road')
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road_layer.datasource = Shapefile(file='../data/test/overlap')
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m.append_style('road', road_style)
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road_layer.styles.append('road')
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m.layers.append(road_layer)
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# Draw map
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# Set the initial extent of the map.
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m.zoom_to_box(Box2d(0,0,14,-14))
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# Render
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im = Image(m.width,m.height)
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render(m, im)
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# Save image to file
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save_to_file('output.png', 'png',im) # true-colour RGBA
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print "Done\n"
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