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/463/?format=api

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

{
    "ob_id": 463,
    "uuid": "00e2ba205fd43a390c168841c3ca8aa3",
    "title": "Total Ozone Mapping Spectrometer (TOMS): Meteor-3 ozone and reflectivity measurements (1991-1994)",
    "abstract": "Data from the Total Ozone Mapping Spectrometer (TOMS), which used backscattered ultraviolet radiance to infer total column ozone measurements (gridded daily for the entire globe).This CD-ROM contains the latest version (version 7) of ozone and reflectivity data from the TOMS (Total Ozone Mapping Spectrometer) instrument onboard the Russian Meteor-3 spacecraft.  Data covering the entire Meteor-3 TOMS lifetime, August 22, 1991 through December 27, 1994, are given as daily files of gridded data, as zonal means, and as overpass data.",
    "keywords": "ATMOSPHERICRADIATION ATMOSPHERE ATMOSPHERICCHEMISTRY",
    "publicationState": "published",
    "dataPublishedTime": "2007-01-15T21:59:59",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/464/?format=api",
        "dataPath": "/badc/CDs/toms_CDs/meteor3_toms_o3+reflect",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 290371157,
        "numberOfFiles": 2679,
        "fileFormat": "Data are ASCII formatted "
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/126/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22890/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25394/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/26002/?format=api"
    ],
    "dataLineage": "Data collected by NASA's Total Ozone Mapping Spectrometer (TOMS) and published on CD-ROM. A copy of the data were obtained by the BADC to assist in data access and to ensure long term preservation.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/345/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/456/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/453/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/4099/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1305/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1307/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1304/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/1306/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52815/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52814/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/470/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2521/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}