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/13335/?format=api

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

{
    "ob_id": 13335,
    "uuid": "7f31695e4b6d4ff5af71ccae213c910b",
    "title": "ESA Ocean Colour Climate Change Initiative (Ocean Colour CCI): 8-day global ocean colour data products gridded on a geographic projection (All Products), Version 1.0",
    "abstract": "The ESA Ocean Colour CCI project has produced global level 3 binned multi-sensor time-series of satellite ocean-colour data with a particular focus for use in climate studies.\r\n\r\nThis dataset contains all their Version 1.0 generated ocean colour products on a geographic projection at 4 km spatial resolution and at an 8-day time resolution.\r\n\r\nData products being produced include: phytoplankton chlorophyll-a concentration; remote-sensing reflectance at six wavelengths; total absorption and backscattering coefficients; phytoplankton absorption coefficient and absorption coefficients for dissolved and detrital material; and the diffuse attenuation coefficient for downwelling irradiance for light of wavelength 490nm. Information on uncertainties is also provided.\r\n\r\nThis data product is on a geographic grid projection, which is a direct conversion of latitude and longitude coordinates to a rectangular grid, typically a fixed multiplier of 360x180. The netCDF files follow the CF convention for this projection with a resolution of 8640x4320.   (A separate dataset is also available for data on a sinusoidal projection.)\r\n",
    "keywords": "ESA, CCI, Geographic",
    "publicationState": "published",
    "dataPublishedTime": "2015-12-07T08:06:27",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/13336/?format=api",
        "dataPath": "/neodc/esacci/ocean_colour/data/v1-release/geographic/netcdf/all_products/8day/v1.0",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2347351364762,
        "numberOfFiles": 690,
        "fileFormat": "The data is in netCDF"
    },
    "timePeriod": "https://catalogue.ceda.ac.uk/api/v2/times/3611/?format=api",
    "geographicExtent": "https://catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/12066/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/50512/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/50559/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/50561/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55904/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55906/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55907/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55912/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55913/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55914/?format=api",
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        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94685/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94687/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94688/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94689/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94690/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94692/?format=api",
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    ],
    "dataLineage": "This data has been produced by the ESA Ocean Colour CCI project and provided to CEDA in the context of the ESA CCI Open Data Portal project",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://catalogue.ceda.ac.uk/api/v2/projects/13365/?format=api"
    ],
    "observationcollection_set": [
        "https://catalogue.ceda.ac.uk/api/v2/observationcollections/13548/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/observationcollections/13330/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/observationcollections/30128/?format=api"
    ],
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    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/2538/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_oc_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}