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/2030/?format=api

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

{
    "ob_id": 2030,
    "uuid": "5aff65ead6800056a1135372b2672d36",
    "title": "ACSOE MAGE EAE-96: Airborne Atmospheric Oxidants Data from on-board 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, hydrocarbons and dimethyl sulphide (DMS) taken in summer 1996. The data were collected to understand the properties of of DMS, gases and aerosols in marine boundary layer conditions.",
    "keywords": "ACSOE, MAGE, EAE, Tropospheric Chemistry",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-24T01:24:36",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12652/?format=api",
        "dataPath": "/badc/acsoe/data/eae-96/jetstream/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 1060807,
        "numberOfFiles": 11,
        "fileFormat": "The data files are NASA-Ames formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3403/?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/1448/?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/7734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48437/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7739/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7740/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48412/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7741/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48431/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/7737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48460/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48413/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48414/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48415/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48416/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48417/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/2033/?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"
        }
    ]
}