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/19269/?format=api

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

{
    "ob_id": 19269,
    "uuid": "e4ac4e34d4d5417592e303aad22b529f",
    "title": "ECMWF ERA-15: Sample Data",
    "abstract": "The European Centre for Medium-Range Weather Forecasts (ECMWF) has provided global atmospheric analyses from its archive for many years. The ERA-15 Re-analysis project was devised in response to wishes expressed by many users for a data set generated by a modern, consistent, and invariant data assimilation system. The ERA-15 project produced a long time-series (January 1979 - February 1994) of consistent meteorological analyses using a single version of the ECMWF model. \r\n\r\nThis dataset is a direct copy of disk 1 of the ECMWF Re-Anlysis Sample Data CD-ROM. It contain some evaporation data which is not elsewhere in the CEDA archive. The data are 2.5 degree gridded at 12Z daily for the Re-Analysis period, 1979-1993. The parameters are:\r\n\r\nU10 - The 10 meter U wind component                     (also in BADC archive)\r\nV10 - The 10 meter U wind component                     (also in BADC archive)\r\ne   - evaporation\r\ntp  - Total precipitation (large scale plus convective) (also in BADC archive)\r\ntcc - Total Cloud cover                                 (also in BADC archive)\r\nt2  - 2 meter temperature                               (also in BADC archive)\r\nd2  - 2 meter dew point temperature",
    "keywords": "ECMWF, ERA, ERA 15, reanalysis, surface, model",
    "publicationState": "published",
    "dataPublishedTime": "2006-12-10T11:29:19",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/19270/?format=api",
        "dataPath": "/badc/ecmwf-era/data/sampledata",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 627604666,
        "numberOfFiles": 200,
        "fileFormat": "Data are GRIB 1 formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1583/?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/21974/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60668/?format=api"
    ],
    "dataLineage": "Data were extracted from European Centre for Medium-Range Weather Forecasts (ECMWF) MARS system and transferred to BADC where they were ingested into the archive.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/5490/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/5487/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72796/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72798/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72792/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72791/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72793/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72844/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72797/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/5491/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2536/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ecmwf-era-products.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}