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/13805/?format=api

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

{
    "ob_id": 13805,
    "uuid": "b42d475e2a344ef9931f10bf60ae6fa8",
    "title": "Total Ozone Mapping Spectrometer (TOMS): NIMBUS-7 Daily UV Exposure measurements at the Earth's Surface",
    "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 one file for each day from November 1, 1978 to March 6, 1993 (with a few missing days).  Each file contains data representing the relative daily areal exposures of ultraviolet (UV) radiation effective in causing skin irritation, computed at each 1 degree latitude by 1.25 degree longitude pixel, between latitudes 65S and 65N.  These data were derived from measurements made by NASA's Total Ozone Mapping Spectrometer (TOMS), which was flown aboard the Nimbus-7 satellite.\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/13806/?format=api",
        "dataPath": "/badc/CDs/toms_CDs/nimbus7_toms_uv_exposure",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 631280342,
        "numberOfFiles": 5313,
        "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/52868/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52866/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52865/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52864/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52869/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52870/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52871/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52872/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52867/?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"
        }
    ]
}