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/7030/?format=api

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

{
    "ob_id": 7030,
    "uuid": "c5ed8bc6a050e4bb7e4119641df1ef12",
    "title": "URGENT PUMACO: Local Authorities Winter 2000 Atmospheric Chemistry measurements West Midlands, UK",
    "abstract": "Observation, Modelling And Management Of Urban Air Pollution (PUMA COnsortium - PUMACO) was a Natural Environment Research Council (NERC) Urban Regeneration and the Environment (URGENT) Air project (GST/02/1981 - Duration: 1/01/1998 - 30/09/2001) led by Prof. Roy M. Harrison, University of Birmingham. \r\n\r\nThis dataset contains measurements from the Local Authorities of nitrogen dioxide, sulphur dioxide, carbon monoxide, nitrogen oxide and PM 2.5.",
    "keywords": "URGENT, PUMA, Chemistry, Pollutants, Air pollution, LA",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-22T01:31:16",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/7031/?format=api",
        "dataPath": "/badc/urgent/data/pumaco/Winter_2000/la",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 592320,
        "numberOfFiles": 9,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3765/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/162/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61864/?format=api"
    ],
    "dataLineage": "Data were collected from a dozen of urban and suburban sites in and around the West Midlands County (UK) from 11 June - 13 July 1999 and 17 January - 17 February 2000 using a variety of observation platforms.\r\nData provided as is by the URGENT PUMACO campaign participants in 2000 to the BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4590/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4598/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4594/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4593/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4591/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4596/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14248/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/6948/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/29871/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/29873/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54685/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/29872/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/29875/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/29877/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55146/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104995/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/29874/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129582/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/7033/?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"
        }
    ]
}