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/13794/?format=api

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

{
    "ob_id": 13794,
    "uuid": "9ddd1ff40bc64bbb8a6a50efd7da0b96",
    "title": "Total Ozone Mapping Spectrometer (TOMS): NIMBUS-7 ozone measurements (1978-1993) version 2",
    "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 2 CD-ROM set contains the latest version (version 7) of ozone data from the TOMS (Total Ozone Mapping Spectrometer) instrument onboard the Nimbus 7 spacecraft.  Data covering the entire Nimbus 7 TOMS lifetime, November 1, 1978 through May 6, 1993, are given as daily files of gridded data, as zonal means, and as monthly averages.  Software is included to image the data.\r\n\r\nFor scientific investigators, a similar CD-ROM containing TOMS surface reflectivity values is planned.  A CD-ROM of version 7 data from the Meteor 3 TOMS instrument (August 1991 - December 1994)\r\nwill be produced this summer.\r\n",
    "keywords": "ATMOSPHERICRADIATION ATMOSPHERE ATMOSPHERICCHEMISTRY",
    "publicationState": "published",
    "dataPublishedTime": "1996-12-10T02:16:33",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/13795/?format=api",
        "dataPath": "/badc/CDs/toms_CDs/nimbus7_toms_o3_v2",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 597992851,
        "numberOfFiles": 8034,
        "fileFormat": "Data are ASCII formatted and images are GIF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/125/?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": [],
    "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"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52819/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52817/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52816/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52821/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52822/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52820/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/462/?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"
        }
    ]
}