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/3457/?format=api

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

{
    "ob_id": 3457,
    "uuid": "bf626d5254cb9df807c3ffef170b2331",
    "title": "ECMWF Atmospheric Angular Momentum data (1979-1993)",
    "abstract": "The Effective Atmospheric Angular Momentum (EAAM) is a combined project from the Met Office and the European Centre for Medium Range Weather Forecasting (ECMWF). The data is of 3 angular momentum components of the mass and wind terms at 12 or 24 hourly intervals. The ECMWF data are from 1979-93. The corresponding Met Office Unified Model data cover the period from 1983 to 1997. This dataset is public.",
    "keywords": "EAAM, angular momentum, Met Office",
    "publicationState": "published",
    "dataPublishedTime": "2007-01-05T23:01:27",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3458/?format=api",
        "dataPath": "/badc/ukmo-aam/data/ecmwf",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 1160486,
        "numberOfFiles": 10,
        "fileFormat": "Data are ASCII encoded, but refer to documentation on how these are structured"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3660/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22451/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25859/?format=api"
    ],
    "dataLineage": "Data files acquired as is from the International Earth Rotation Service's (IERS) Special Bureau for the Atmosphere (SBA), for archiving at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2332/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8605/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/13400/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3456/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14788/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14793/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14792/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14789/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14787/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14790/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14791/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54880/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/3829/?format=api",
    "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"
        }
    ]
}