result.hits.hits.forEach(function(hit) {
var x = hit._source.project.location.lon;
var y = hit._source.project.location.lat;
var name = hit._source.project.name;
var pop2005 = hit._source.project.pop2005;
//console.log('x: ' + x + ' y: ' + y);
mem_ds.add({ 'x' : x,
'y' : y,
'properties' : { 'NAME': name, 'pop2005': pop2005 }
});
});
function(err, map) {
if (err) {
cb(err, undefined)
}
var options = {
extent: '-20037508.342789,-8283343.693883,20037508.342789,18365151.363070'
};
var mem_ds = new mapnik.MemoryDatasource({});
var proj = new mapnik.Projection('+init=epsg:3857');
body.hits.hits.forEach(function(hit) {
var xy = proj.forward([hit._source.geopoint.lon, hit._source.geopoint.lat]);
var f = {
'x': xy[0],
'y': xy[1],
'properties': {
'id': hit._id,
'lat': hit._source.geopoint.lat,
'lon': hit._source.geopoint.lon
}
}
if (hit._source[map_def.style.styleOn]) {
f["properties"][map_def.style.styleOn] = hit._source[map_def.style.styleOn]
} else {
f["properties"][map_def.style.styleOn] = "";
}
mem_ds.add(f);
});
var l = new mapnik.Layer('test');
l.srs = map.srs;
l.styles = ['style'];
l.datasource = mem_ds;
map.add_layer(l);
map.extent = bbox;
if (render_type === "grid.json") {
var grid = new mapnik.Grid(map.width, map.height, {key: "id"});
var options = {layer: 0, "fields": [map_def.style.styleOn,"lat","lon"]}
map.render(grid, options, function(err, grid2) {
cb(err, grid2.encodeSync({"format": "utf"}));
});
} else {
var im = new mapnik.Image(map.width, map.height);
map.render(im, function(err, im) {
cb(err, im.encodeSync('png'));
});
}
}
body.hits.hits.forEach(function(hit) {
var xy = proj.forward([hit._source.geopoint.lon, hit._source.geopoint.lat]);
var f = {
'x': xy[0],
'y': xy[1],
'properties': {
'id': hit._id,
'lat': hit._source.geopoint.lat,
'lon': hit._source.geopoint.lon
}
}
if (hit._source[map_def.style.styleOn]) {
f["properties"][map_def.style.styleOn] = hit._source[map_def.style.styleOn]
} else {
f["properties"][map_def.style.styleOn] = "";
}
mem_ds.add(f);
});
var map = new mapnik.Map(256, 256);
map.fromStringSync(s);
// go get some arbitrary data that we can stream
var shp = path.join(__dirname, '../data/world_merc');
var ds = new mapnik.Datasource({
type: 'shape',
file: shp
});
// get the featureset that exposes lazy next() iterator
var featureset = ds.featureset();
var mem_datasource = new mapnik.MemoryDatasource(
{'extent': '-20037508.342789,-8283343.693883,20037508.342789,18365151.363070'}
);
// build up memory datasource
while ((feat = featureset.next(true))) {
var e = feat.extent();
// center longitude of polygon bbox
var x = (e[0] + e[2]) / 2;
// center latitude of polygon bbox
var y = (e[1] + e[3]) / 2;
var attr = feat.attributes();
mem_datasource.add({ 'x' : x,
'y' : y,
'properties' : { 'feat_id': feat.id(), 'NAME': attr.NAME, 'POP2005': attr.POP2005 }
});
}
function(err, map) {
if (err) {
res.writeHead(500, {
'Content-Type': 'text/plain'
});
res.end(err.message);
}
var options = {
extent: '-20037508.342789,-8283343.693883,20037508.342789,18365151.363070'
};
var mem_ds = new mapnik.MemoryDatasource(options);
var el_query = {
'size': 100,
'query' : {
'match_all' : {}
},
'filter' : {
'geo_bounding_box' : {
'project.location' : {
'top_left' : {
'lat' : bbox[3],
'lon' : bbox[0]
},
'bottom_right' : {
'lat' : bbox[1],
'lon' : bbox[2]
}
}
}
}
};
search(el_query, function(result) {
if (!result.hits.hits) {
res.writeHead(500, {
'Content-Type': 'text/plain'
});
res.end('no elastic search results');
} else {
//console.log(JSON.stringify(result.facets, null, 2));
//console.log(result.took + 'ms / ' + result.hits.total + ' results');
result.hits.hits.forEach(function(hit) {
var x = hit._source.project.location.lon;
var y = hit._source.project.location.lat;
var name = hit._source.project.name;
var pop2005 = hit._source.project.pop2005;
//console.log('x: ' + x + ' y: ' + y);
mem_ds.add({ 'x' : x,
'y' : y,
'properties' : { 'NAME': name, 'pop2005': pop2005 }
});
});
var l = new mapnik.Layer('test');
l.srs = map.srs;
l.styles = ['style'];
l.datasource = mem_ds;
map.add_layer(l);
map.extent = bbox;
var im = new mapnik.Image(map.width, map.height);
map.render(im, function(err, im) {
if (err) {
res.writeHead(500, {
'Content-Type': 'text/plain'
});
res.end(err.message);
} else {
res.writeHead(200, {
'Content-Type': 'image/png'
});
res.end(im.encodeSync('png'));
}
});
}
});
}