Observation Instance – Django REST framework

Get a list of Observation objects.

### Available end points:

- `/observations/` - Will list all Results in the database
- `/observations.json` - Will return all Results in json format. This can
also be achieved by using the accept header. `application/json`
- `/observations/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `status`
- `result_field`
- `discoveryKeywords`
- `updateFrequency`
- `nonGeographicFlag`
- `publicationState`
- `permissions`

### How to use filters:

These filters can be used like django query filters using __ for related model relationships.

- `/observations/?uuid=d594d53df2612bbd89c2e0e770b5c1a0`
- `/observations/?status=completed`
- `/observations/?results_field__dataPath__startswith=/neodc/esacci`
- `/observations/?discoveryKeywords__name=ESACCI`
- `/observations/?nonGeographicFlag=True`

Filters can be stacked to build an 'AND' relationship. E.g.

- `/observations/?publicationState__in=published,citable&nonGeographicFlag=True`
- `/observations/?publicationState__in=published,citable&discoveryKeyword__name=NDGO0003`

GET /api/v2/observations/26543/?format=api

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 26543,
    "uuid": "bdf2cf5a78554a73bf5e57a853e3bbc0",
    "title": "ESA Antarctic Ice Sheet Climate Change Initiative (Antarctic_Ice_Sheet_cci): Grounding Line Locations for the Ferringo, Pine Island, Thwaites, Smith, Kohler and Pope Glaciers, Antarctica, 1995-2017, v2.0  (CCI subset)",
    "abstract": "Grounding line locations (GLL) data for the Ferringo, Pine Island, Thwaites, Smith, Kohler and Pope Glaciers in Antarctica, produced by the ESA Antarctic Ice Sheet Climate Change Initiative (CCI) project. The grounding lines  have been derived from satellite observations from the ERS-1/2 and Copernicus Sentinel-1 instruments, acquired in the period from 1995-2017.\r\n\r\nAn extended dataset of Grounding line locations for these Glaciers is available on the ENVEO CryoPortal (http://cryoportal.enveo.at/data/)",
    "keywords": "Antarctica, ice sheets, glaciers, grounding line location",
    "publicationState": "published",
    "dataPublishedTime": "2017-04-27T23:00:00",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26544/?format=api",
        "dataPath": "/neodc/esacci/ice_sheets_antarctica/data/grounding_line_locations/Ferrigno_PineIS_Thwaites_Smith_Pope_Kohler/v2.0_cci_subset/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 192023,
        "numberOfFiles": 8,
        "fileFormat": "ESRI Shapefile, KML and WKT in textfile (CSV)"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/6725/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2282/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were produced by DLR in the context of the ESA CCI Antarctic Ice Sheet project team and are archived on the ENVEO Cryoportal (http://cryoportal.enveo.at/data/)  They have been supplied to CEDA in the context of the ESA CCI Open Data Portal Project.\r\n\r\nAn extended dataset is available on the ENVEO Cryoportal (http://cryoportal.enveo.at/data/)",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24700/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/24699/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111532/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111533/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111534/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111535/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111536/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111537/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111540/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111531/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111541/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111542/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2534/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_icesheets_antarctic_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}