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/26512/?format=api

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

{
    "ob_id": 26512,
    "uuid": "92c7a6a0824f4d18afa70aa1b86c103f",
    "title": "Tropical Rainfall Measuring Mission (TRMM) Rainfall Estimate L3 3 hour 0.25 degree x 0.25 degree (TRMM_3B42)",
    "abstract": "This dataset contains output from the TMPA (TRMM Multi-satellite Precipitation) Algorithm, and provides precipitation estimates in the TRMM regions that have the (nearly-zero) bias of the ”TRMM Combined Instrument” precipitation estimate and the dense sampling of high-quality microwave data with fill-in using microwave-calibrated infrared estimates. The granule size is 3 hours.\r\n\r\nThe Tropical Rainfall Measuring Mission (TRMM) was a joint mission between NASA and the Japan Aerospace Exploration (JAXA) Agency to study rainfall for weather and climate research.",
    "keywords": "TRMM, TMPA, rainfall, tropical",
    "publicationState": "published",
    "dataPublishedTime": "2018-09-10T09:13:59",
    "doiPublishedTime": null,
    "updateFrequency": "monthly",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26524/?format=api",
        "dataPath": "/badc/trmm/data/TRMM_3B42",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 55468077361,
        "numberOfFiles": 252245,
        "fileFormat": "Data are HDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7151/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2280/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64837/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64838/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64840/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64841/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64844/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64845/?format=api"
    ],
    "dataLineage": "Data taken as is from National Aeronautics and Space Administration (NASA). https://disc.gsfc.nasa.gov/datasets/TRMM_3B42_V7/summary?keywords=trmm_3b42",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/26511/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111402/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111403/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111404/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111405/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111407/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111408/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111409/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111448/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168825/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/26510/?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"
        }
    ]
}