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/8441/?format=api

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

{
    "ob_id": 8441,
    "uuid": "da9288387796a9b80c619c611f330a58",
    "title": "International Satellite Land Surface Climatology Project Initiative II: VHRR FASIR at unknown computer",
    "abstract": "The Fourier-Adjusted, Sensor and Solar zenith angle corrected, Interpolated, Reconstructed (FASIR) adjusted Normalized Difference Vegetation Index (NDVI) dataset was detected with the Advanced Very High Resolution Radiometer (AVHRR) on-board the MetOp satellites.  Derived biophysical parameter fields were generated to provide a 17-year satellite record of monthly changes in the photosynthetic activity of terrestrial vegetation.  This dataset was produced and provided by Dr. Sietse Los from the Department of Geography, University of Wales at Swansea.",
    "keywords": "BIOSPHERE EARTHSCIENCE",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-12T17:00:46",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/8442/?format=api",
        "dataPath": "/neodc/avhrr_fasir/fasir_biophys_monthly_xdeg",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 610400985,
        "numberOfFiles": 179,
        "fileFormat": "Data are ASCII formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/2418/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22325/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22334/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25848/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25902/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25930/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25931/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25932/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25985/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25988/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25993/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25994/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25996/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25997/?format=api"
    ],
    "dataLineage": "version 4.13 provided by Dr. Sietse Los.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5391/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/8443/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/8440/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30127/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33572/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33569/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/8445/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2646/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "avhrr_fasir",
            "label": "restricted: avhrr_fasir group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/avhrr_fasir.pdf",
            "licenceClassifications": "academic"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}