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/12904/?format=api

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

{
    "ob_id": 12904,
    "uuid": "73a39939d50d46fbb2d65616c6ba302e",
    "title": "ALPHASAT: Raw beacon radio propagation measurements at 20 and 40 GHz (KA/Q bands) made at Chilbolton, Hampshire",
    "abstract": "Raw beacon radio propagation measurements at 20 and 40 GHz (KA/Q bands) made at Chilbolton, Hampshire, UK, for the ESA funded 'Large Scale Assessment of KA/Q band atmospheric channel using the ALPHASAT TDP5 propagation beacon signal (ASALASCA)' project.\r\n\r\nThese are signals measured by the two receivers located at Chilbolton received from the Aldo Paradoni Payload (TDP5) beacon on board ESA's ALPHASAT telecommunications satellite.\r\n\r\nMeasurements began in July 2016.",
    "keywords": "ALPHASAT, radio propagation, ESA, 20 GHz, 40 GHz, KA/Q band",
    "publicationState": "published",
    "dataPublishedTime": "2017-06-01T11:46:54",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/23996/?format=api",
        "dataPath": "/badc/asalasca/data/chilbolton/raw",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 49399066719,
        "numberOfFiles": 730,
        "fileFormat": "Data are NetCDF4 formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/6535/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/92/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13238/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21859/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21868/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21879/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65524/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65525/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65527/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65528/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65529/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65530/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65531/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65532/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65533/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65534/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65535/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65536/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65537/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65540/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65541/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65543/?format=api"
    ],
    "dataLineage": "Data were collected by the project participants before processing and delivery to CEDA for archiving",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12892/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/12893/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/98454/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49369/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49370/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49372/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49371/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/98452/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/98453/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/98455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105025/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49373/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/12896/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2668/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "asalasca",
            "label": "restricted: asalasca group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/rugl_versions/rugl_v1-0.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}