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/18515/?format=api

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

{
    "ob_id": 18515,
    "uuid": "0ab5786cde484cc49c85f6dd3bd343b9",
    "title": "FAAM B607 FENNEC, LADUNEX and EUFAR flight: Airborne atmospheric measurements from core instrument suite on board the BAE-146 aircraft",
    "abstract": "Airborne atmospheric measurements from core instrument suite data on board the FAAM BAE-146 aircraft collected for Fennec - The Saharan Climate System (FENNEC), EUFAR Lagrangian Dust Source Inversion Experiment and European Facility for Airborne Research in Environmental and Geo-sciences (EUFAR) projects.",
    "keywords": "FENNEC, LADUNEX, EUFAR, FAAM, airborne, atmospheric measurments",
    "publicationState": "citable",
    "dataPublishedTime": "2014-07-14T13:38:13.091013",
    "doiPublishedTime": "2018-01-17T10:02:53.612714",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/18514/?format=api",
        "dataPath": "/badc/faam/data/2011/b607-jun-22",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 290085193,
        "numberOfFiles": 46,
        "fileFormat": "Data are netCDF and NASA-Ames formatted. Ancillary files may be plain ASCII or PDF formatted. Image files may be PNG formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/4851/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1513/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50851/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50853/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50857/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50858/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50860/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50863/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50866/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50868/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50869/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50875/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50876/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50878/?format=api",
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    ],
    "dataLineage": "Data were collected by instrument scientists during the flight before preparation and delivery for archiving at the NCAS British Atmospheric Data Centre.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
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    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/18516/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "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"
        }
    ]
}