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/854/?format=api

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

{
    "ob_id": 854,
    "uuid": "652cc356aa52328163368f65c2c606bf",
    "title": "Antarctic Mesoscale Prediction System (AMPS): 4.5km numerical weather prediction data",
    "abstract": "The Antarctic Mesoscale Prediction System (AMPS) is an experimental, real-time numerical weather prediction capability that provides support for the United States Antarctic Program, Antarctic science, and international Antarctic efforts. AMPS produces numerical guidance from the Weather Research and Forecasting (WRF) model with twice-daily forecasts covering Antarctica. The effort is sponsored by the National Science Foundation (NSF) Office of Polar Programs and the NSF UCAR and Lower Atmospheric Facilities Oversight Section. It is a collaboration of the National Center for Atmospheric Research and the Byrd Polar Research Center of The Ohio State University.\r\n\r\nThis dataset contains 4.5km numerical weather prediction data.",
    "keywords": "AMPS, Antarctic, WRF",
    "publicationState": "published",
    "dataPublishedTime": "2014-09-22T06:32:11",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/855/?format=api",
        "dataPath": "/badc/amps_antarctic/data/4_5km",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 9183664659823,
        "numberOfFiles": 3854,
        "fileFormat": "Data are held in tar.bz2 archive balls"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3598/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/746/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Model data supplied by Alan Gadian for storage at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/573/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/13253/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/851/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2772/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2775/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2776/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2777/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50772/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50774/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2774/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50775/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169557/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/25089/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2619/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "amps_antarctic",
            "label": "restricted: amps_antarctic group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/amps_antarctic.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}