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/14266/?format=api

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

{
    "ob_id": 14266,
    "uuid": "5c500e31c1be490498f6eab13ecb7dd1",
    "title": "ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity data for the Greenland Margin from ERS-2 for winter 1995-1996 (April 2016 release)",
    "abstract": "This dataset contains ice velocities for the Greenland margin for winter 1995-1996. This dataset has been produced by the ESA Greenland Ice Sheet Climate Change Initiative (CCI) project.\r\n\r\nThis dataset consists of ice velocity maps which have been generated from SAR data from the ERS-2 satellite for winter 1995-1996. The data is supplied on a 500m polar stereographic grid. The ice velocity product contain the horizontal components, vN and vE, of the total velocity vector, which is derived from radar measurements assuming surface parallel flow. The used digital elevation model of the surface is also supplied. The North and East velocities at any grid points are given in a local geographic north-east coordinates system (and not in the used grid map projection system).",
    "keywords": "Greenland Ice Sheet, ESA, CCI",
    "publicationState": "published",
    "dataPublishedTime": "2016-04-11T16:06:10",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14325/?format=api",
        "dataPath": "/neodc/esacci/ice_sheets_greenland/data/greenland_ice_velocity/old_products/Greenland_Margin_ERS2_Winter_1995_1996/v1.1",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 223029647,
        "numberOfFiles": 7,
        "fileFormat": "Data are NetCDF-4 formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3789/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/895/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/12066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13230/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13231/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13232/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13233/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53928/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI Greenland Ice Sheet project team and supplied to CEDA in the context of the ESA CCI Open Data Portal Project.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14317/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/14316/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55335/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55336/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55337/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55612/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104875/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105268/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55338/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2553/?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_greenland_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}