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/3600/?format=api

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

{
    "ob_id": 3600,
    "uuid": "e31687d9187eef12a566d5f7eecd129d",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) HALO Photonics Doppler Lidar Raw Data",
    "abstract": "Data were collected from the 12th of September 2006 to the 30th of June 2011 by the HALO photonics Doppler lidar at Chilbolton Observatory, Hampshire. The dataset contains measurements attenuated backscatter coefficients of aerosols within the atmosphere, as well as the radial and Doppler velocity of these particles. Plots of the attenuated backscatter coefficient at different heights, and of the Doppler velocity of particles are also available.",
    "keywords": "CFARR, Doppler lidar, backscatter",
    "publicationState": "published",
    "dataPublishedTime": "2003-09-14T08:47:29",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3601/?format=api",
        "dataPath": "/badc/chilbolton/data/lidar-doppler-halo-raw",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 49941876773,
        "numberOfFiles": 2639,
        "fileFormat": "Data are NetCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1026/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/63/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21919/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21962/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22450/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22454/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22456/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22457/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22459/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22460/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25384/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25393/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25402/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25855/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25911/?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/2444/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3569/?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"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15180/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15181/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15182/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15183/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15185/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44110/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44114/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15179/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44111/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44112/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44113/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/3602/?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"
        }
    ]
}