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| author | Chris Schlaeger <chris@linux.com> | 2014-08-12 21:56:44 +0200 |
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| committer | Chris Schlaeger <chris@linux.com> | 2014-08-12 21:56:44 +0200 |
| commit | ea346a785dc1b3f7c156f6fc33da634e1f1a627b (patch) | |
| tree | af67530553d20b6e82ad60fd79593e9c4abf5565 /misc/openlayers/examples/cartodb-geojson.html | |
| parent | 59741cd535c47f25971bf8c32b25da25ceadc6d5 (diff) | |
| download | postrunner-ea346a785dc1b3f7c156f6fc33da634e1f1a627b.zip | |
Adding jquery, flot and openlayers to be included with the GEM.v0.0.4
Diffstat (limited to 'misc/openlayers/examples/cartodb-geojson.html')
| -rw-r--r-- | misc/openlayers/examples/cartodb-geojson.html | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/misc/openlayers/examples/cartodb-geojson.html b/misc/openlayers/examples/cartodb-geojson.html new file mode 100644 index 0000000..2d78970 --- /dev/null +++ b/misc/openlayers/examples/cartodb-geojson.html @@ -0,0 +1,71 @@ +<!DOCTYPE html> +<html> + <head> + <title>Reading Features From CartoDB using GeoJSON</title> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> + <link rel="stylesheet" href="../theme/default/style.css" type="text/css"> + <link rel="stylesheet" href="style.css" type="text/css"> + <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> + <meta name="apple-mobile-web-app-capable" content="yes"> + <script src="../lib/OpenLayers.js"></script> + </head> + <body> + <h1 id="title">Reading Features From CartoDB using GeoJSON</h1> + <div id="tags"> + protocol, script, cartodb + </div> + <p id="shortdesc"> + Demonstrates how to load features on OpenLayers using CartoDB SQL API. + </p> + <div id="map" class="smallmap"></div> + <div id="docs"> + <p> + <a href="http://cartodb.com/">CartoDB</a> is an Open Source + Geopatial Database on the cloud. It allows you to import your + data in shapefiles, KML, OpenStreeMap files, CSV, etc. and + then analyze and visualize it. Internally CartoDB uses PostGIS + 2.0 so all functionality in PostGIS can be used straight + away. CartoDB exposes two APIS. One + to <a href="http://developers.cartodb.com/documentation/cartodb-apis.html#maps_api">generate maps</a> + as tiles with interactivity, and another <a href="http://developers.cartodb.com/documentation/cartodb-apis.html#sql_api">SQL API</a> + to retrieve vector data using among other formats, GeoJSON. In + this example we do a very simple query to obtain all protected + areas in Costa Rica from a public table. You can adapt the SQL + to include where clauses or complicate geospatial queries. + </p> + <p> + View the source code of this page to see how this is done. And + check the table on CartoDB + for <a href="https://examples.cartodb.com/tables/costa_rica_pa/public#/map">Protected Areas in Costa Rica</a> + </p> + </div> + <script> + var map = new OpenLayers.Map({ + div: "map", + layers: [ + new OpenLayers.Layer.OSM(), + new OpenLayers.Layer.Vector("Vectors", { + projection: new OpenLayers.Projection("EPSG:4326"), + strategies: [new OpenLayers.Strategy.Fixed()], + protocol: new OpenLayers.Protocol.Script({ + url: "http://examples.cartodb.com/api/v2/sql", + params: { + q: "select * from costa_rica_pa LIMIT 50", + format: "geojson" + }, + format: new OpenLayers.Format.GeoJSON({ + ignoreExtraDims: true + }), + callbackKey: "callback" + }), + eventListeners: { + "featuresadded": function() { + this.map.zoomToExtent(this.getDataExtent()); + } + } + }) + ] + }); + </script> + </body> +</html> |