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/19215/?format=api

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

{
    "ob_id": 19215,
    "uuid": "630970b6acfa44588e42156393f9a063",
    "title": "AASE: Analyses of potential vorticity and pressure on constant potential temperature surfaces",
    "abstract": "The Airborne Arctic Stratospheric Expedition (AASE) which was based in Stavanger, Norway during January and February, 1989, was designed to study the production and loss mechanisms of ozone in the north polar stratospheric environment, and the effect on ozone distribution of the Arctic polar vortex and of the cold temperatures associated with the formation of Polar Stratospheric Clouds (PSC). \r\n\r\nThis dataset contains analyses of potential vorticity and pressure on constant potential temperature surfaces.",
    "keywords": "AASE, AASE-98, chemistry, analysis",
    "publicationState": "published",
    "dataPublishedTime": "1990-12-10T10:37:48",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/19216/?format=api",
        "dataPath": "/badc/CDs/aase89/data/analyses/isentrop",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 12911804,
        "numberOfFiles": 551,
        "fileFormat": "Data are ASCII formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1581/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1590/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were collected during January and February 1988-1989.\r\nCopy of CR-ROM published by NASA. The data are held on CD-ROM at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/5465/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/5462/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72580/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72577/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72584/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72581/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72578/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72582/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72579/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72583/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72585/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72586/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/19214/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2521/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}