Name: node-mapnik
Owner: SpatialDev
Description: Bindings to mapnik for node.js
Forked from: mapnik/node-mapnik
Created: 2016-11-11 18:39:33.0
Updated: 2016-11-11 18:39:35.0
Pushed: 2016-11-11 20:25:14.0
Homepage: http://mapnik.org/documentation/node-mapnik
Size: 18514
Language: C++
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Render a map from a stylesheet:
mapnik = require('mapnik');
fs = require('fs');
egister fonts and datasource plugins
ik.register_default_fonts();
ik.register_default_input_plugins();
map = new mapnik.Map(256, 256);
load('./test/stylesheet.xml', function(err,map) {
if (err) throw err;
map.zoomAll();
var im = new mapnik.Image(256, 256);
map.render(im, function(err,im) {
if (err) throw err;
im.encode('png', function(err,buffer) {
if (err) throw err;
fs.writeFile('map.png',buffer, function(err) {
if (err) throw err;
console.log('saved map image to map.png');
});
});
});
Convert a jpeg image to a png:
mapnik = require('mapnik');
mapnik.Image.open('input.jpg').save('output.png');
Convert a shapefile to GeoJSON:
mapnik = require('mapnik');
ik.register_datasource(path.join(mapnik.settings.paths.input_plugins,'shape.input'));
ds = new mapnik.Datasource({type:'shape',file:'test/data/world_merc.shp'});
featureset = ds.featureset()
geojson = {
ype": "FeatureCollection",
eatures": [
feat = featureset.next();
e (feat) {
geojson.features.push(JSON.parse(feat.toJSON()));
feat = featureset.next();
riteFileSync("output.geojson",JSON.stringify(geojson,null,2));
For more sample code see the tests and sample code.
OS|Node.js|C++ minimum requirements|OS versions —|—|—|— Mac|v0.10.x, v4, v5, v6|C++11|Mac OS X > 10.10 Linux|v0.10.x, v4, v5, v6|C++11|Ubuntu Linux > 16.04 or other Linux distributions with g++ >= 5 toolchain (>= GLIBCXX_3.4.20 from libstdc++) Windows|v0.10.x, v4, v5|C++11|See the Windows requirements section
An installation error like below indicates your system does not have a modern enough libstdc++/gcc-base toolchain:
r: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version GLIBCXX_3.4.20 not found (required by /node_modules/osrm/lib/binding/osrm.node)
If you are running Ubuntu older than 16.04 you can easily upgrade your libstdc++ version like:
add-apt-repository ppa:ubuntu-toolchain-r/test
apt-get update -y
apt-get install -y libstdc++-5-dev
To upgrade libstdc++ on travis (without sudo) you can do:
uage: cpp
: false
ns:
t:
sources:
- ubuntu-toolchain-r-test
packages:
- libstdc++-5-dev # upgrade libstdc++ on linux to support C++11
Just do:
npm install mapnik@3.x
Note: This will install the latest node-mapnik 3.x series, which is recommended. There is also an 1.x series which maintains API compatibility with Mapnik 2.3.x and 2.2.x and a v0.7.x series which is not recommended unless you need to support Mapnik 2.1 or older.
By default, binaries are provided for:
On those platforms no external dependencies are needed.
Other platforms will fall back to a source compile: see Source Build for details.
Binaries started being provided at node-mapnik >= 1.4.2 for OSX and Linux and at 1.4.8 for Windows.
NOTE: Windows binaries for the 3.x series require the Visual C++ Redistributable Packages for Visual Studio 2015:
See https://github.com/mapnik/node-mapnik/wiki/WindowsBinaries for more details.
The 1.x series require the Visual C++ Redistributable Packages for Visual Studio 2013:
To build from source you need:
Install Mapnik using the instructions at: https://github.com/mapnik/mapnik/wiki/Mapnik-Installation
Confirm that the mapnik-config program is available and on your ${PATH}.
Then run (within the cloned node-mapnik directory:
npm install --build-from-source
Windows builds are maintained in https://github.com/mapbox/windows-builds
To require node-mapnik as a dependency of another package put in your package.json:
"dependencies" : { "mapnik":"*" } // replace * with a given semver version string
To run the tests do:
npm test
BSD, see LICENSE.txt