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/27634/?format=api

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

{
    "ob_id": 27634,
    "uuid": "a119b841548c4948b2711f2ddbbe2e27",
    "title": "Spectral analysis of voltage data taken from the Canadian Riometer Array",
    "abstract": "This dataset contains voltage data taken from the Canadian Riometer Array (CRA). The provided tables and datasets can be used to determine if the voltage time series of CRA riometers have characteristic spectral features. In addition, datasets are provided which have been collected from the Solar Wind Electron Proton Monitor (SWEPAM) and Magnetic Field Experiment (MAG) instruments aboard the Atmospheric Composition Explorer (ACE).",
    "keywords": "Riometer, voltage, spectral analysis, CRA",
    "publicationState": "citable",
    "dataPublishedTime": "2019-08-15T12:54:20",
    "doiPublishedTime": "2019-08-16T08:03:56.265871",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/27635/?format=api",
        "dataPath": "/badc/deposited2019/riometer-analysis/data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 25599028,
        "numberOfFiles": 27,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7407/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2412/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57965/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60886/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60887/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60888/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60889/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60890/?format=api"
    ],
    "dataLineage": "Data produced by the project participants at Queen's University, Canada and uploaded to the Centre for Environmental Data (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10565/?format=api"
    ],
    "projects": [],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115503/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115504/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115505/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115506/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115507/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115509/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115510/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115511/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115508/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168888/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/27639/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}