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/28098/?format=api

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

{
    "ob_id": 28098,
    "uuid": "43a22be3b71d46f0a5d02c7ee3472d24",
    "title": "PM10 concentration and composition measurements in Lak Si, Bangkok, Thailand",
    "abstract": "This dataset contains PM10 concentration and composition measurements taken in Lak Si, Bangkok, Thailand. Particulate matter under 10 micrometres diametre in size (PM10) was collected in 24 hour and 72 hour samples in a rooftop site in Lak Si, Bangkok, Thailand using a Sven Leckel LVS3 PM10 sampler. Samples were weighed and analysed for concentrations of the following elements: Mg, Al, Ca, V, Cr, Mn, Fe, Co, Ni, Cu. Zn,  As, Se, Mo, Cd, Sb, Ba and Pb. The data covered three seasons in Bangkok, hot, cool and rainy, from 5th March 2018 until 15th November 2018. Meteorological data was measured in the same location using a Gill Maximet 501 and Gill Maximet 100 weather station. Weather parameters measured included rainfall, wind speed, wind direction, pressure, relative humidity, temperature, dew point and solar radiation. \r\n\r\nMeasurements were taken by the staff of the Toxicology group in the Chulabhorn Research Institute, Thailand and the Atmospheric Chemistry Research Group in the University of Bristol, UK as part of the NERC grant Ultrafine and Submicron Particles in the Urban Environment in Thailand.",
    "keywords": "Thailand, PM10, composition, meteorology",
    "publicationState": "published",
    "dataPublishedTime": "2022-01-27T15:34:53",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/28093/?format=api",
        "dataPath": "/badc/deposited2019/thailand-particles/data/pm10/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 35212,
        "numberOfFiles": 2,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7556/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2543/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54165/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54166/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54167/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54168/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54170/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56169/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57964/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57967/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68647/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68648/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68649/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68650/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68651/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68652/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68653/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68654/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68655/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68656/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68657/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68658/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68659/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68660/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68661/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68662/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68663/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68664/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68665/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68666/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68667/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68668/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68669/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68670/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68671/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68672/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68673/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68674/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68675/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68676/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68677/?format=api"
    ],
    "dataLineage": "Data sent by the project participants to the Centre for Environmental Data Anaylsis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/28097/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118275/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118277/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118278/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118279/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118281/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118282/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118283/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118276/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118280/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/28096/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}