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/14283/?format=api

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

{
    "ob_id": 14283,
    "uuid": "69f6e93f5f074580861dfdb4c3385dbe",
    "title": "Snow-Vegetation-Atmosphere Interactions over Heterogeneous Landscapes: Sodankyla Snow Depth data",
    "abstract": "Vegetation and meteorological observations (snow and radiation) were collected by various ground instruments in an area of forest near Abisko (Sweden) and Sodankylä (Finland) during measurement campaigns in March 2011 and March 2012. This dataset contains the snow depth data collected at Sodankyla site in March 2011. \r\nSnow depths were measured by pushing a graduated probe down to the ground surface at points with 2 m spacing in each 20 m × 20 m plot, giving grids of 121 points. \r\nThis was a NERC funded project.",
    "keywords": "NERC, snow, Sodankyla",
    "publicationState": "published",
    "dataPublishedTime": "2015-12-14T10:29:31",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14302/?format=api",
        "dataPath": "/badc/nerc-rm2010/data/snow-vegetation-atmosphere/sodankyla/snowdepth",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 10849,
        "numberOfFiles": 6,
        "fileFormat": "Data are CSV formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3683/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/766/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25870/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55555/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55556/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55557/?format=api"
    ],
    "dataLineage": "Campaign research data.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12273/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/13749/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55350/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55346/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55347/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55353/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55344/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55351/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55352/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55348/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55349/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/14285/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2543/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}