ArcGIS Open Data

Interoperability

• koop
• OpenSearch
• DCAT
• OpenData API
• Building an app against the API

koop

Feature Services from APIs

• Open Source (github.com/Esri/koop) R & D
• node js
• geojson (& others)    ==>    feature services
• feature services    ==>    geojson
• export as kml, csv, shp

Socrata

OpenSearch & DCAT

Daniel Fenton

Open Data API

Brooks Robertson

What is an API?

Totally clear right?

Simple API example

1. http://opendata.arcgis.com
2. /datasets
3. .json
4. ?q=water&sort_by=relevance&page=1

OpenData V1 API (beta)

Who consumes the OpenData API?

OpenData V2 API (public)

OpenData V2 API (public) continued..

OpenData V2 API (public) continued..

What can you do with it?

ArcGIS Open Data

$.getJSON('http://my.api.url')
  .done(function (response, status, xhr) { 
    /* stuff it into the DOM... */ 
  })
  .fail(function (xhr, status, error) { 
    /* do something about the error! */ 
  });
          

MV*

Choosing the Best JavaScript Framework for You

Key endpoints:

And maybe:

Also:

Errors...

$.getJSON('http://my.api.url')
  .done(function (response, status, xhr) { 
    if (response.error) {
      /* you don't have to do this! */
    }
  })
  .fail(function (xhr, status, error) {
    switch (xhr.status) {
      case 404:
        /* handle 404 */
      default:
        /* handle other errors */
    }
  });
          

Gotcha's:

• Currently no JSONP support
• Does support CORS
• But ... IE < 10

mjuniper.github.io/OpenData-Backbone

Ok,... how?

              
                $ git clone
                $ cd opendata-backbone
                $ npm install
                $ bower install
                $ gulp serve
              
            

In backbone-land...

DatasetCollection = Backbone.Collection.extend({
  
  url: function () {
    //get the params (q=, page=, etc) from somewhere...
    var queryParams = '';
    return MyOD.config.api + 'datasets.json?' + queryParams;
  },

  parse: function (resp) {
    return resp.data;
  }

});
          

DatasetModel = Backbone.Model.extend({
  
  url: function () {
    return MyOD.config.api + 'datasets/' + this.get('id') + '.json';
  },

  parse: function (response) {
    return response.data;
  }
  
});
            

More to come?

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