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/12635/?format=api

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

{
    "ob_id": 12635,
    "uuid": "bf805d665f3b49c292dd3abb41479baa",
    "title": "Met Office LIDARNET Wittering Vaisala CT25k ceilometer cloud base and backscatter data",
    "abstract": "Cloud base and backscatter data from the Met Office's Vaisala Ct25k ceilometer located at Wittering,  Sussex. The Met Office's laser cloud base recorders network (LCBRs), or ceilometers, returns a range of products for use in forecasting and hazard detection. The backscatter profiles can allow detection of aerosol species such as volcanic ash where suitable instrumentation is deployed.\r\n",
    "keywords": "Met Office, lidar, ceilometer, ash",
    "publicationState": "published",
    "dataPublishedTime": "2015-07-29T15:32:27",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12636/?format=api",
        "dataPath": "/badc/ukmo-lidarnet/data/wittering/vaisala-ct25k",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 4823340152,
        "numberOfFiles": 11526,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3397/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/672/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/1635/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/1636/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/4865/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8483/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9768/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9770/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9783/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9784/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9790/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11523/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11524/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11527/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11529/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11736/?format=api"
    ],
    "dataLineage": "Data were collected by the Met Office before processed through the Met Office's Hermes system. A copy of these data were then delivered by the Met Office to CEDA for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8485/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12429/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/10994/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48347/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48349/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48344/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48346/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48350/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48351/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/48348/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102607/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/12638/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2532/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "ukmo_wx",
            "label": "restricted: ukmo_wx group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement.pdf",
            "licenceClassifications": "academic"
        },
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2533/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "ukmo_wx_gov",
            "label": "restricted: ukmo_wx_gov group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement_gov.pdf",
            "licenceClassifications": "policy"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}