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/13889/?format=api

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

{
    "ob_id": 13889,
    "uuid": "b6625bf983f043108e0230f8795c31fd",
    "title": "Stratosphere-Troposphere Exchange Project (STEP): Airborne trace gas and aerosol measurements during flight 4 of the NASA ER-2 aircraft",
    "abstract": "Data from the flight 4 of 17 from the NASA/NOAA aircraft campaign based in Darwin, Australia in January and February 1987. Designed to investigate mechanisms of equatorial stratosphere-troposphere exchange. Measurements include trace gases and aerosol in cloud free and cloud dominated conditions. This dataset is public.",
    "keywords": "STEP, Aerosols, Aircraft",
    "publicationState": "published",
    "dataPublishedTime": "1988-12-10T00:00:00",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/13890/?format=api",
        "dataPath": "/badc/CDs/step87/step87/data/flight04",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2343071,
        "numberOfFiles": 9,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/392/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/21/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21762/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21772/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21777/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21779/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21780/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25381/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25383/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25393/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25394/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25396/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25404/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25852/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25857/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25949/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25950/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25984/?format=api"
    ],
    "dataLineage": "Data collected onboard the NASA ER-2 aircraft in January and February, 1987 based in Darwin, Australia, and processed by members of the STEP project before publication on CD-ROM. A copy of the data was obtained by the BADC to assist in data discovery.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/1300/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/1297/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53282/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53281/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53286/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53289/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53290/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53280/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53279/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53284/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53283/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53285/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53287/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53288/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/1311/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2521/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}