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/771/?format=api

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

{
    "ob_id": 771,
    "uuid": "7539368978a0f21cf7e6c7375a831931",
    "title": "Imperial PERCA data at Halley Bay Station for the CHABLIS Campaign (2005)",
    "abstract": "Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) is a Natural Environment Research Council (NERC) and Antarctic Funding Initiative (AFI) funded project, aimed at studying the chemistry of the Antarctic Boundary Layer in greater detail, and for a longer duration, than has previously been attempted. Field measurements were carried out at the British Antarctic Survey station, Halley, at the Clean Air Sector Laboratory (CASLab). Year-round measurements began in February 2004, and a summer campaign focussing on oxidants ran during January/February 2005, after which CHABLIS fieldwork ended. The dataset contains toal peroxy radical measurements during the CHABLIS summer intensive at Halley. Access to this dataset is now public.",
    "keywords": "CHABLIS, NERC, Antarctic, boundary layer, perca",
    "publicationState": "published",
    "dataPublishedTime": "2007-02-23T01:12:42",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/772/?format=api",
        "dataPath": "/badc/chablis/data/imp-perca",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 35120,
        "numberOfFiles": 2,
        "fileFormat": "NASA-ames"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/216/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/9/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52353/?format=api"
    ],
    "dataLineage": "Data files submitted as is by the CHABLIS campaign participants in 2005/2006 and archived at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/513/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8669/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/718/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/715/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2403/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2402/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2415/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2401/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2404/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2405/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2419/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54634/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/774/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}