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/19860/?format=api

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

{
    "ob_id": 19860,
    "uuid": "b989a4bf8d534973918470118c0d96fe",
    "title": "ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity Time Series of the Petermann Glacier for 2015-2016 from Sentinel-1 data, v1.0",
    "abstract": "This dataset contains a time series of ice velocities for the Petermann Glacier in Greenland, derived from Sentinel-1 SAR data acquired between 23/1/2015-10/6/2016. It has been produced by the ESA Greenland Ice Sheet Climate Change Initiative (CCI) project.\r\n\r\nData files are delivered in NetCDF format at 250m grid spacing in North Polar Stereographic projection (EPSG: 3413). The horizontal velocity components are provided in true meters per day, towards the EASTING(x) and NORTHING(y) directions of the grid.",
    "keywords": "Greenland, Ice sheet, CCI, ESA",
    "publicationState": "published",
    "dataPublishedTime": "2017-01-17T17:46:24",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26840/?format=api",
        "dataPath": "/neodc/esacci/ice_sheets_greenland/data/greenland_ice_velocity/greenland_iv_250m_s1_petermann/v1.0/",
        "oldDataPath": [
            "https://api.catalogue.ceda.ac.uk/api/v2/results/20331/?format=api"
        ],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 60458117,
        "numberOfFiles": 5,
        "fileFormat": "Data files are delivered in NetCDF format at 250m grid spacing in North Polar Stereographic projection (EPSG: 3413). The horizontal velocity components are provided in true meters per day, towards the EASTING(x) and NORTHING(y) directions of the grid."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/5329/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1650/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/12066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13230/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13232/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53928/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI Greenland Ice Sheet project team and supplied to CEDA in the context of the ESA CCI Open Data Portal Project.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14317/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/14316/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/75490/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/75491/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79020/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79019/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104932/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105149/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105327/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79018/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2553/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_icesheets_greenland_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}