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/6698/?format=api

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

{
    "ob_id": 6698,
    "uuid": "bd6fd7e3bcbd6a410b8b75a6514466c4",
    "title": "UTLS-Ozone: Balloon-borne ozonesonde and snow-white hygrometer measurements at Aberystwyth, UK",
    "abstract": "Ozone and water vapour in the tropopause region was an Upper Troposphere Lower Stratosphere (UTLS) Round 3 project led by Dr G. Vaughan, Dr J.A. Whiteway, Physics Department University of Wales, Aberystwyth and Dr R.L. Jones, Department of Chemistry, University of Cambridge. \r\n\r\nThis dataset contains Balloon-borne simultaneous measurements of ozone and water vapour in the tropopause region. The flights were targeted as far as possible at different air masses in the lower stratosphere over Aberystwyth, with a particular emphasis on north-westerly jet streams.",
    "keywords": "UTLS, chemistry, ozone, water vapour",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-13T15:33:13",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/6699/?format=api",
        "dataPath": "/badc/utls/data/tropopause_O3_and_H2O/aberystwyth/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2144219,
        "numberOfFiles": 56,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1962/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/159/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25394/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25397/?format=api"
    ],
    "dataLineage": "Data files were provided as is by the University of Wales, Aberystwyth in 2003.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4398/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14440/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/6697/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28806/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28805/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28810/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28804/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28807/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28808/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28809/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28811/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56027/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/6701/?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"
        }
    ]
}