WebFeatureService

This is a simple WFS client for JavaScript.

Getting started

To use this module directly in a simple HTML site:

<script src="https://unpkg.com/webfeatureservice/umd/index.js"></script>
...
<script>
    const service = new WebFeatureService({ url: 'http://example.com/wfs' });
    ...
</script> 

To use with Browserify, Webpack, Parcel etc:

npm install webfeatureservice

then

const WFS = require('webfeatureservice');
// ...

Usage

const WFS = require('webfeatureservice');
const service = new WFS({
    url: 'http://.../wfs',
    auth: {
        username: 'myuser',
        password: 'secret'
    }
});

Standard WFS operations:

Each takes an options object, which is passed directly to the WFS service. Standard options are listed here for convenience.

• service.getCapabilities()
• service.describeFeatureType() typeName (required): layer name to describe
• service.getFeature()
  • typeName (required): layer name to retrieve features for
  • maxFeatures: maximum number of features to return.
  • propertyName: string or array of properties to include. if geometry not included, you get no geom.
  • bbox: [miny, minx, maxy, maxx]
  • cql_filter: filter as described here.
  • outputFormat: string (CSV|application/json|text/javascript/shape-zip|GML2|GML3) (Docs). If CSV, CSV requested and automatically parsed, returned as object

Additional convenience wrappers:

• service.getColumns()
• service.getColumnNames()
• service.getGeometryColumn()
• service.getNonGeometryColumns()
• service.getFeatureProperties()

Example Usage

const WFS = require('webfeatureservice');
const service = new WFS({
    url: 'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs'
});
 
service.getCapabilities().then(caps => {
    console.log(caps.FeatureTypeList[0].FeatureType.length + ' feature types.');
});
 
service.getFeature({
  typeName: 'sdr:nyu_2451_34564',
  maxFeatures: 15,
  // Can't use bbox with cql_filter
  // bbox: [40.88, -74, 41, -73.6],
 
  propertyName: ['name', 'type'],
  cql_filter:"type='Cemetery' AND borough='Queens'"
}).then(results => {
  if (results.features) {
    console.log('Found ' + results.features.length + ' cemeteries in Queens');
    results.features.forEach(function(feature) {
      console.log(`${feature.properties.name} (feature id: ${feature.id})`);
      // console.log(feature);
    });
  }
}).catch(e => {
    console.error(e);
});

License(s)

MIT

Copyright (c) 2018 Steve Bennett [e-mail], based on earlier version by Damon Oehlman [e-mail]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.