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/8173/?format=api

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

{
    "ob_id": 8173,
    "uuid": "dd6483225d844373621844fd2a6184a2",
    "title": "Theme 5 - Cryosphere and Polar Oceans - Ice Sheet Dynamics: Jakobshavn Glacier Calving front - SAR backscatter images (March-July 2011)",
    "abstract": "This dataset has been produced as part of the Theme 5 (Cryosphere and Polar Oceans) in the National Centre for Earth Observation which aims to use new EO data to quantify changes in the mass balance of the cryosphere and to develop new models to represent the relevant processes in coupled climate prediction models.\r\nThis dataset holds timeseries of Greenland glacier calving front fluctuations as maps and backscatter intensity images for the period March-July 2011. \r\n\r\nThe dataset consists of 38 SAR backscatter images acquired every 3 days between the 12th March and 1st July 2011 during the ERS-2 3-day campaign.\r\n\r\nThe backscatter data were transformed to map coordinates using the GLAS/ICESat 1 km Laser Altimetry Digital Elevation Model of Greenland which is provided at Polar Stereographic grids (DiMarzio, J., Brenner, A., Schutz, R., Schuman, A. & Zwally, H.J. (2007): GLAS/ICESat 1 km laser altimetri digital elevation model of Greenland. Boulder, Colorado USA: National Snow and Ice Data Centre. Digital media). ",
    "keywords": "NCEO, Greenland, glacier",
    "publicationState": "published",
    "dataPublishedTime": "2012-06-27T17:56:41",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/8174/?format=api",
        "dataPath": "/neodc/nceo-cryosphere/data/ice-sheet-dynamics/Greenland-Glacier-Calving-front",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 620775695,
        "numberOfFiles": 41,
        "fileFormat": "maps and images are stored as TIFF formatted file. A metadata readme file is associated with the files in the archive.\r\n\r\n\r\n"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/2341/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/179/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data prepared by authors and sent to NERC Earth Observations Data Centre (NEODC) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5274/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8614/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/8175/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/8172/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30127/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44069/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33080/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33078/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33081/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33082/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33084/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33079/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44072/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44070/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54739/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44071/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/13697/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}