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/30555/?format=api

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

{
    "ob_id": 30555,
    "uuid": "e43f9bab3ae240d8a4bb331ea7c67149",
    "title": "Methane production in the Artic: Isotopic d13C methane measurements taken from Alaskan wetland, 2018 - 2019",
    "abstract": "Isotopic sampling of methane from tedlar bag samples collected over Alaskan wetlands, samples analysed at Royal Holloway University of London\r\n\r\nThis dataset contains air sample measurements of isotopic d13C methane. The measurements were collected using regular flask samples over Alaskan wetlands. The samples were analysed Royal Holloway University of London using continuous flow gas chromatography/isotope ratio mass spectrometry (CF-GC/IRMS).\r\n\r\nThese data were collected as part of theMethane Production in the Arctic: Under-recognized Cold Season and Upland Tundra - Arctic Methane Sources (UAMS) project funded by the Natural Environment Research Council (NERC) (NE/P002552/1).",
    "keywords": "Methane, d13C, Isotope, NERC",
    "publicationState": "published",
    "dataPublishedTime": "2020-08-19T10:38:47",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/30556/?format=api",
        "dataPath": "/badc/deposited2020/uams-methane-artic/data/alaskan-wetland/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 54373,
        "numberOfFiles": 3,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8320/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2631/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65436/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65441/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65444/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65466/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/67429/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/67430/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/80087/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/80088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/80089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/80090/?format=api"
    ],
    "dataLineage": "Data were collected locally and sent to RHUL for analysis and deposited at the Centre for Environmental Data Analysis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24879/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132220/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132221/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132222/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132223/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132224/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132225/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132227/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132226/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168931/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132228/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132229/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132230/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132231/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/30557/?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"
        }
    ]
}