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/2795/?format=api

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

{
    "ob_id": 2795,
    "uuid": "3f19f0cea1588c25c948db5effc68893",
    "title": "ARA Grob G520T Egrett aircraft flight summary for the CWVC EMERALD campaign",
    "abstract": "The EMERALD projects were airborne measurement campaigns designed to study dynamical, microphysical and infra-red radiative properties of cirrus clouds, using both in-situ and remote measurement techniques. The dataset contains static air temperature, static air pressure, relative humidity, water vapour mixing ratio, and ozone mixing ratio. These data are part of the NERC Clouds, Water Vapour and Climate (CWVC) programme.",
    "keywords": "",
    "publicationState": "old",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/45245/?format=api",
        "dataPath": "/badc/cwvc/data/EMERALD/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 17267295734,
        "numberOfFiles": 126974,
        "fileFormat": "ASCII text and image formats"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/754/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/44/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were collected by two instrumented aircrafts were used during these projects, both operated by Airborne Research Australia, a Beech B200T Super King Air and the Grob Egrett T520, based in Adelaide during September 2001, and based in Darwin during November and December 2002. Jim Whiteway (Univeristy of Wales, Aberystwyth) supplied the dataset to the BADC as is.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/868/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12632/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12637/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12630/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12634/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12635/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12631/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12636/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/12633/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54860/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/2797/?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"
        }
    ]
}