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/2050/?format=api

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

{
    "ob_id": 2050,
    "uuid": "7fb2a3a89db31f59d73d58f92f3648b4",
    "title": "ACSOE MAGE EAE-97: Airborne Atmospheric Oxidants Data from on-board the Cranfield Jetstream Research Aircraft",
    "abstract": "The Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) Marine Aerosol and Gas Exchange (MAGE) Eastern Atlantic Experiment 96 (EAE-96) Airborne Atmospheric Oxidants Data from on-board Cranfield Jetstream Research Aircraft contains measurements of ozone, nitrogen oxides (NOx) and halocarbons taken during a two day flight in May, 1997. The data were collected to understand the properties of DMS, gases and aerosols in marine boundary layer conditions.",
    "keywords": "ACSOE, MAGE, EAE, Tropospheric Chemistry",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-24T01:25:54",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12651/?format=api",
        "dataPath": "/badc/acsoe/data/eae-97/jetstream/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3986038,
        "numberOfFiles": 11,
        "fileFormat": "The data files are NASA-Ames formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3401/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/32/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data collected by instruments on-board the Cranfield Jetstream Research Aircraft. Data acquired by BADC for archiving as programme was underway.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1458/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12666/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/1920/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8100/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8105/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8103/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8169/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8102/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104994/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8099/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8101/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8106/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48439/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48468/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48438/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8115/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8136/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/8160/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/2053/?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"
        }
    ]
}