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/26224/?format=api

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

{
    "ob_id": 26224,
    "uuid": "89a34bc430834422bef1f72e2172e3b9",
    "title": "ACITES: Monthly global surface ozone concentration and ozone dry deposition flux fields from models",
    "abstract": "Monthly global surface ozone concentration and ozone dry deposition flux fields from models participating in the UN/ECE Task Force on Hemispheric Transport of Air Pollution (TF HTAP) intercomparison.  Models were driven by meteorological fields for the year 2001.\r\n\r\nData are regridded to a consistent 3 x 3 degree resolution and saved in NetCDF format.",
    "keywords": "ACITES, Atmospheric Chemistry, Ozone, HTAP",
    "publicationState": "published",
    "dataPublishedTime": "2018-10-16T10:30:57",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26223/?format=api",
        "dataPath": "/badc/acites/data/htap_data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 12481830,
        "numberOfFiles": 19,
        "fileFormat": "Data are NetCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8771/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2203/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57905/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57910/?format=api"
    ],
    "dataLineage": "Data are regridded to a consistent 3 x 3 degree resolution and saved in NetCDF format. Further details about the HTAP intercomparison are available from http://www.htap.org/ and the original model data can be obtained from: http://join.iek.fz-juelich.de/access",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12136/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/26222/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109684/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109682/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112062/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112063/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109688/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109685/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/26229/?format=api",
    "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"
        }
    ]
}