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/8039/?format=api

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

{
    "ob_id": 8039,
    "uuid": "629f2e217e5a0df690cce2029b968da7",
    "title": "Level1b GOME-2 data onboard MetOp B",
    "abstract": "Data from the GOME-2 instrument on-board the Eumetsat Polar System (EPS) Metop-B satellite. GOME-2 is a spectrometer that measures both the radiance component of the light reflected by the Sun-illuminated Earth's atmosphere and the direct sunlight. The measurements are used to obtain detailed information on global trace gas distributions of ozone, nitrogen dioxide, water vapor, bromine oxide and other trace gases as well as aerosol properties.  The NERC Earth Observation Data Centre (NEODC) currently holds Level 1B data, and obtained the data directly from Eumetsat.",
    "keywords": "",
    "publicationState": "published",
    "dataPublishedTime": "2014-09-22T05:50:41",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/8040/?format=api",
        "dataPath": "/neodc/gome2_metop_b/data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 21087269398645,
        "numberOfFiles": 32561,
        "fileFormat": null
    },
    "timePeriod": null,
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data collected and processed by EUMETSAT before a copy was obtained directly from EUMETSAT by NEODC",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5227/?format=api"
    ],
    "projects": [],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/8038/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30129/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32805/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32810/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32804/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32807/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32808/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32809/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32811/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32806/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2621/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "noaccess",
            "accessRoles": null,
            "label": "noaccess: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/gome-2.pdf",
            "licenceClassifications": "unstated, any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}