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API Output

The API uses Django REST Framework. Responses are returned in the format of the original request, but if you'd like to see a json response from a browser, add the parameter format=json. Results are returned in pages (by default, each page is of size 10). If the request is valid, the json results will contain:

  • count: a total count of the matching results
  • next: URL to the next page of results
  • previous: URL to the previous page of results
  • results: an array of the requested JSON objects.

Here are the URLs and details about how to use them:

###Datasets A Dataset is a group of MapPoints or MapPolygons. This contains the common information for the set of geometries.

A response includes the following elements:

  • id is the unique id of this Dataset. It can be used to match a dataset with MapPoints or MapPolygons or to filter those elements.
  • name is the name of the set of points.
  • cached is the date the Dataset was last updated (excluding updates to Dataset information or tags alone).
  • field1_en, field2_en, field3_en are the English names of the data included in each MapPoint or MapPolygon as field1, field2, field3. This is the name you should use for display.
  • tags is an array of JSON objects of all approved tags that appear on any MapPoint or MapPolygon in this Dataset. The array contains:
    • tag is the text of the tag.
    • id is the id of the tag.

###MapPoints A MapPoint is an individual location on the map.

A response includes the following elements:

  • dataset is a link to the information about the dataset to which this MapPoint belongs
  • id is a unique system id for this MapPoint
  • name is the name of the MapPoint
  • latitude, longitude are the latitude and longitude location of the MapPoint
  • street, city, state, zipcode, county are elements of the street address of the MapPoint
  • field1, field2, field3 are the data matching the field description in the corresponding Dataset
  • tags is an array of JSON objects of all approved tags for this MapPoint. The array contains:
    • tag is the text of the tag.
    • id is the id of the tag.

MapPoints can be filtered using the following parameters:

  • tag, tags These can be used interchangably. Accepts a tag, a tag id number, a list of tags or a list of tag ids. By default, MapPoints that match any of the tags will be included in the results (OR Boolean result).
  • match If this parameter is all, only MapPoints matching all of the tags will be included (AND Boolean result)
  • dataset Using the Dataset id, return only those MapPoints matching a specific Dataset.
  • max_lat, min_lat, max_lon,min_lon Create a bounding box and return only MapPoints within that box.
  • city, state, county Match any of these exactly using string matching on these fields.
  • zipcode, zip, zip_code Match the zip_code exactly. Only the first five characters will be matched.

###MapPolygons A MapPolygon is a polygon on a map. The response is in GeoJSON format. For more information, see the GeoJSON spec.

  • type should always be Feature
  • geometry is an object with the geometric details in it.
    • type should always be MultiPolygon when requesting a MapPolygon
    • coordinates is an array of polygon coordinate arrays.
  • properties In GeoJSON format, addition information is contained inside the properties element.
    • id is a unique system id for this MapPolygon.
    • dataset The id of the Dataset to which this MapPolygon belongs. Note: this is different that the same field for MapPoints.
    • remote_id is the id of the MapPolygon used by the original source of the data. This can be used to match MapPolygons with outside data sources.
    • name is the English name of this MapPolygon.
    • latitude, longitude are the latitude and longitude location of the rough center of the MapPolygon
    • field1, field2 are the data matching the field description in the corresponding Dataset
    • tagsAn array of JSON objects of all approved tags for this MapPoint. The array contains:
      • tag The text of the tag.
      • id The id of the tag.

MapPolygons can be filtered using similar parameters to MapPoints:

  • tag, tags These can be used interchangably. Accepts a tag, a tag id number, a list of tags or a list of tag ids. By default, MapPolygons that match any of the tags will be included in the results (OR Boolean result).
  • match If this parameter is all, only MapPolygons matching all of the tags will be included (AND Boolean result)
  • dataset Using the Dataset id, return only those MapPolygons matching a specific Dataset.
  • max_lat, min_lat, max_lon,min_lon Create a bounding box and return only MapPolygons at least partially within that box.

###Tags GET and POST are allowed for this URL, but GET is only intended to be used for debugging purposes. This URL is for linking an existing tag with an existing approved MapPoint or MapPolygon. A POST request with a defined MapPoint and a defined MapPolygon will fail. A POST request with neither will also fail.

Currently, no authentication is required to POST.

A POST request should include:

  • mappoint OR mappolygon by id number
  • tag by id number

###New Tags GET and POST are allowed for this URL, but GET is only intended to be used for debugging purposes. This URL is for linking an existing tag or a new tag with an existing approved MapPoint or MapPolygon. A POST request with a defined MapPoint and a defined MapPolygon will fail. A POST request with neither will also fail.

Currently, no authentication is required to POST. Eventually, a logged in user will be required to POST. A new tag will not be approved until done manually.

A POST request should include:

  • mappoint OR mappolygon by id number
  • tag by tag text