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/4823/?format=api

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

{
    "ob_id": 4823,
    "uuid": "110256814c81a9c6cdf53cfd842e6c31",
    "title": "Convective Storm Initiation Project (CSIP): the University of Manchester Radiosonde Data from Swanage, UK",
    "abstract": "The University of Manchester radiosonde data contain measurements collected by a UFAM (Universities' Facility for Atmospheric Measurement) radiosonde at Swanage, Dorset, from the 19th of June 2005 to the 25th of August 2005. The dataset contains measurements of air temperature, air pressure, wind speed and wind direction, and relative humidity.",
    "keywords": "CSIP, radiosonde",
    "publicationState": "published",
    "dataPublishedTime": "2006-08-17T13:54:52",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/4824/?format=api",
        "dataPath": "/badc/csip/data/man-radiosonde",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 67213905,
        "numberOfFiles": 251,
        "fileFormat": "Data are NASA Ames formatted.\r\n"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1391/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/95/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54017/?format=api"
    ],
    "dataLineage": "Data were collected by the collected by the instrument scientist before preparation and delivery to the Convective Storm Initiation Project (CSIP) participants and then to the BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3225/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/4614/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/4611/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21924/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21923/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21926/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21929/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41246/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21925/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49523/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49524/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/4825/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2543/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}