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/3528/?format=api

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

{
    "ob_id": 3528,
    "uuid": "9f7d4c63f8ba5ca0e3ca6ed4a62d6cdf",
    "title": "GBS 20.7GHz slant path radio propagation measurements, Sparsholt site",
    "abstract": "The GBS (Global Broadcast Service) dataset is a series of radio attenuation measurements made at three sites in the UK: Chilbolton and Sparsholt, both in southern UK, and Dundee in Scotland. The aim of the experiment was to make long term measurements of the signal strength received from a 20.7GHz beacon on the US Department of Defense satellite UFO-9 at multiple sites, in order to determine whether the use of site diversity as a fade mitigation technique would be effective. The dataset spans a period of 3 years, from August 2003 to August 2006 with signal attenuation sampled once per second. \r\n\r\n\r\nThis dataset is cited in:\r\nS. A. Callaghan,   J. Waight,  J.L.Agnew, C. J. Walden, C.L.Wrench , S. Ventouras “The GBS dataset: measurements of satellite site diversity at 20.7 GHz in the UK”, Geoscience Data Journal, 17 March 2013, DOI: 10.1002/gdj3.2",
    "keywords": "ATMOSPHERICWATERVAPOR ATMOSPHERE ATMOSPHERICWINDS PRECIPITATION ATMOSPHERICTEMPERATURE ATMOSPHERICRADIATION ATMOSPHERICPRESSURE CLOUDS",
    "publicationState": "citable",
    "dataPublishedTime": "2003-09-20T13:23:47",
    "doiPublishedTime": "2011-03-31T23:00:00",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3529/?format=api",
        "dataPath": "/badc/chilbolton/data/gbs_sparsholt",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 373259411,
        "numberOfFiles": 558,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/991/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/61/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52639/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52640/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52641/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52642/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52643/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52644/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52645/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52646/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52647/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52648/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52649/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52650/?format=api"
    ],
    "dataLineage": "Data were prepared by the Chilbolton Facility for Atmospheric and Radio Research (CFARR) staff prior to submission to BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2389/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3464/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3461/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14979/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14982/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14983/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14991/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44929/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44939/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14981/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14980/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44930/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44931/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44932/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44933/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44934/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44935/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44936/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44937/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44938/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/3530/?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"
        }
    ]
}