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/6141/?format=api

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

{
    "ob_id": 6141,
    "uuid": "66dd0a3dec2498a477550037540a97bd",
    "title": "NERC Mesosphere-Stratosphere-Troposphere (MST) Radar Facility: 10m Surface Wind Data, Frongoch site, Wales",
    "abstract": "10m surface wind speed and direction data are available from instruments mounted on a 10m tower at the Frongoch site, 6km away from the main Natural Environment Research Council (NERC) Mesosphere-Stratosphere-Troposphere (MST) Radar Facility's site in Wales. Wind direction is obtained from a Vector Instruments W200P wind vane and wind speeds from a Vector Instruments A100R anemometer.",
    "keywords": "MST, wind speed, wind direction, gust, Frongoch, Wales",
    "publicationState": "published",
    "dataPublishedTime": "2008-08-28T14:07:43",
    "doiPublishedTime": null,
    "updateFrequency": "daily",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/6142/?format=api",
        "dataPath": "/badc/mst/data/surface-wind",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 380800717,
        "numberOfFiles": 9303,
        "fileFormat": "The data are NASA-Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1800/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/514/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22318/?format=api"
    ],
    "dataLineage": "Data are acquired by the MST radar facility and sent to the BADC within an hour of acquisition. Data are then immediately ingested into the BADC archives.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3981/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/25330/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/6117/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26064/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26058/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26059/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26063/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26060/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26065/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26061/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/26062/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/46127/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103836/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/6145/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2543/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}