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Mapnik.org - the core of geospatial visualization & processing
mapnik
the core of geospatial visualization & processing
mapnik combines pixel-perfect image output with lightning-fast cartographic algorithms, and exposes interfaces in C++, Python, and Node.
code in your language
mapnik's high-quality bindings let's you choose from Node.js, Python, and C++.
- Python
- Node
- C++
import mapnik
m = mapnik.Map(256,256)
mapnik.load_map(m, "path/to/file.xml")
m.zoom_all()
mapnik.render_to_file(m, "the_image.png")var mapnik = require("mapnik");
var fs = require("fs");
mapnik.register_default_fonts();
mapnik.register_default_input_plugins();
var map = new mapnik.Map(256, 256);
map.load("./test/stylesheet.xml", function(err, map) {
map.zoomAll();
var im = new mapnik.Image(256, 256);
map.render(im, function(err, im) {
im.encode("png", function(err, buffer) {
fs.writeFile("map.png", buffer);
});
});
});#include <mapnik/map.hpp>
#include <mapnik/load_map.hpp>
#include <mapnik/agg_renderer.hpp>
#include <mapnik/image.hpp>
#include <mapnik/image_util.hpp>
main()
{
mapnik::Map m(256,256);
mapnik::load_map(m, "path/to/file.xml");
m.zoom_all();
mapnik::image_rgba8 im(256,256);
mapnik::agg_renderer<mapnik::image_rgba8> ren(m, im);
ren.apply();
mapnik::save_to_file(im, "the_image.png");
}style with a stylesheet
Only a single XML stylesheet for your map, regardless of the code binding.
XML Configuration
<Map background-color="blue" srs="+init=epsg:4326">
<Style name="My Style">
<Rule>
<PolygonSymbolizer fill="#f2eff9" />
<LineSymbolizer stroke="rgb(50%,50%,50%)" stroke-width="0.1" />
</Rule>
</Style>
<Layer name="world" srs="+init=epsg:4326">
<StyleName>My Style</StyleName>
<Datasource>
<Parameter name="file">path/to/shapefile.shp</Parameter>
<Parameter name="type">shape</Parameter>
</Datasource>
</Layer>
</Map>above all else, beautiful maps