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/3576/?format=api

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

{
    "ob_id": 3576,
    "uuid": "f5a472bf4607f5a0d5269c9643f212fd",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) CAMRa Radar Data",
    "abstract": "Data were collected from the 30th of March 1999 to the 30th of March 2011 by the CAMRa (Chilbolton Advanced Meteorological Radar) at Chilbolton Observatory, Hampshire. The dataset contains measurements of radial component of wind velocity, radar frequency, differential phase shift and unfolded Doppler velocity. Plots are also available of differential phase shift, Doppler velocity, radar reflectivity factor, and linear depolarisation ratio.",
    "keywords": "CFARR, meteorology, radar",
    "publicationState": "published",
    "dataPublishedTime": "2003-09-14T09:00:22",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3577/?format=api",
        "dataPath": "/badc/chilbolton/data/radar-camra",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 252029352921,
        "numberOfFiles": 158289,
        "fileFormat": "Data are NetCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1014/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/63/?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/21769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21919/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21962/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22450/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22454/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22456/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22457/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22459/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22460/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25384/?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/25402/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25855/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25911/?format=api"
    ],
    "dataLineage": "Data are prepared by 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/2428/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3569/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3461/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7378/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15119/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15121/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15122/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15123/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15125/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44445/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44449/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15120/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44446/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44448/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44447/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/46097/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/3579/?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"
        }
    ]
}