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/26620/?format=api

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

{
    "ob_id": 26620,
    "uuid": "84e30a69df5a4cd2b34eddb647c5c3d9",
    "title": "Southern OceaN optimal Approach To Assess the carbon state, variability and climatic drivers (SONATA): Carbon Dioxide measurements by the British Antarctic Survey from the Halley Research Station in Antarctica",
    "abstract": "This dataset contains carbon dioxide concentration measurements from the British Antarctic Survey's Halley Research Station in Antarctica. The Picarro G2301 analyser was used for the measurement of carbon dioxide and located at the Clean Air Sector Laboratory (CASLab).  Data times were averaged from the 1 minute data to provide hourly data sets. The UK participation of Southern OceaN optimal Approach To Assess the carbon state, variability and climatic drivers (SONATA) was funded by the Natural Environment Research Council (NERC, grant: NE/P021360/1).",
    "keywords": "SONATA, Carbon dioxide, BAS, Antarctica, Halley",
    "publicationState": "citable",
    "dataPublishedTime": "2018-10-12T08:55:18",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26621/?format=api",
        "dataPath": "/badc/sonata/data/halley-co2",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 1798875,
        "numberOfFiles": 6,
        "fileFormat": "Data are BADC CSV formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7166/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2290/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58106/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58107/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58108/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58109/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58110/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58386/?format=api"
    ],
    "dataLineage": "Data were collected, quality controlled and prepared for archiving by the instrument scientists before upload to the Centre for Environmental Data Analysis (CEDA) for long term archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9694/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/26626/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/27293/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111876/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111877/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111878/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111879/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111880/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111882/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111883/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111881/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168849/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111884/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/26622/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}