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/3500/?format=api

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

{
    "ob_id": 3500,
    "uuid": "5c81db56554e894173ccb95e1ac91887",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) Microwave Radiometer Data",
    "abstract": "Data were collected by the Chilbolton Facility for Atmospheric and Radio Research (CFARR) Visible Radiometer from 10th of May 2001 to the present at Chilbolton, Hampshire. The dataset contains measurements of Calibrated brightness temperature measured at 21 frequencies (selectable) between 22.0 and 30.0 GHz, water vapour profile, and integrated water vapour (IWV). Data are produced once every approximately 2 minutes.",
    "keywords": "CFARR, Chilbolton, radiometer, microwave",
    "publicationState": "published",
    "dataPublishedTime": "2003-09-20T14:32:45",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3501/?format=api",
        "dataPath": "/badc/chilbolton/data/radiometers-microwave",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 217389807,
        "numberOfFiles": 1713,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/977/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/59/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50512/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54762/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54763/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57469/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57470/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57471/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57472/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57473/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57474/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57475/?format=api"
    ],
    "dataLineage": "Data are collected by 4 radar systems, of which the largest is the 3 GHz Doppler radar (CAMRa), and 4 lidar systems, at Chilbolton Observatory, Hampshire.\r\nData are prepared by Chilbolton Facility for Atmospheric and Radio Research (CFARR) staff prior to submission to BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2366/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3464/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3461/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7378/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/32603/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14904/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14905/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14906/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14907/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14909/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42297/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14903/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42298/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42300/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/3503/?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"
        }
    ]
}