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springmeyer/14_10083_6161.vector.pbf.z

Last active August 29, 2015 13:57
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AGG line-join:round triangle artifacts bug testcase
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README.md
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json.xml
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merc.json
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]
}
Raw
original.xml
<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over" maximum-extent="-20037508.34,-20037508.34,20037508.34,20037508.34">
<Style name="contour">
<Rule>
<Filter>[ele]=2330</Filter>
<LineSymbolizer stroke="#000000" offset="1" clip="false" stroke-width="1" stroke-linejoin="round" />
</Rule>
</Style>
<Layer name="contour"
srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
<StyleName>contour</StyleName>
</Layer>
</Map>
Raw
package.json
{
"name" : "vtile-test",
"main" : "./vtile-mem.js",
"dependencies" : {
"mapnik":"1.4.x",
"queue-async":"*",
"bytes":"*"
}
}
Raw
test.js
var fs = require('fs');
var zlib = require('zlib');
var bytes = require('bytes');
var mapnik = require('mapnik');
mapnik.register_default_fonts();
function vtile() {
var map = new mapnik.Map(256,256);
map.loadSync('./original.xml');
var filename = '14_10083_6161.vector.pbf.z';
var data = fs.readFileSync(filename);
zlib.inflate(data, function(err, buf) {
if (err) throw err;
var parts = filename.split('_');
var z = +parts[0];
var x = +parts[1];
var y = +(parts[2].split('.')[0]);
var vt = new mapnik.VectorTile(z,x,y);
vt.setData(buf);
var im = new mapnik.Image(256,256);
vt.parse(function(err) {
if (err) throw err;
fs.writeFileSync('out.json',JSON.stringify(vt.toGeoJSON(1),null,1));
vt.render(map, im, {buffer_size:0}, function(err,image) {
if (err) throw err;
image.save('out.png',"png24")
});
});
});
}
function normal() {
mapnik.register_default_input_plugins();
var map2 = new mapnik.Map(256,256);
map2.loadSync('./json.xml');
map2.extent = [4625357.4555925857275724,4965349.357405048795044,4627803.4404977113008499,4967795.3423101771622896];
map2.render(new mapnik.Image(256,256),function(err,im) {
if (err) throw err;
im.save('out2.png',"png24");
});
}
//normal()
vtile()
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