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/14451/?format=api

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

{
    "ob_id": 14451,
    "uuid": "c4e198e4e85a4a3985abea6d8f4785d9",
    "title": "UTLS Night-Time Chemistry of the Upper Troposphere and Lower Stratosphere NO3 measurements",
    "abstract": "NERC-UTLS Ozone Thematic Program, 'Night-Time Chemistry of the Upper Troposphere and Lower Stratosphere' project measuring sunrise NO3 and sunset NO2 column densities above Aberystwyth.\r\n\r\nThis dataset contains column density and profiles of NO3.",
    "keywords": "UTLS, Night time, Chemistry",
    "publicationState": "published",
    "dataPublishedTime": "2000-12-10T13:44:17",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14454/?format=api",
        "dataPath": "/badc/utls/data/night-time_chemistry/NO3",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 717286,
        "numberOfFiles": 202,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3811/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/903/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22343/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/83694/?format=api"
    ],
    "dataLineage": "Data files were provided as is to the BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14448/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/14450/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56073/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56076/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56078/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56079/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56080/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56075/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56081/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56082/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56083/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56084/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56089/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/14456/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}