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/32250/?format=api

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

{
    "ob_id": 32250,
    "uuid": "c09edb49931045e98287eac3ea17b423",
    "title": "APHH: Atmospheric black carbon measurements made at Indira Gandhi Delhi Technical University for Women (IGDTUW)",
    "abstract": "This dataset contains black carbon concentrations using the aethalometer AE33 monitor. Measurements were made at the Indira Gandhi Delhi Technical University for Women (IGDTUW), India. Concentrations are reported in micrograms per cubic centimetre (ug.cm-3). The stationary inlet was located on the roof of a 4-storey building at IGDTUW campus. \r\n\r\nThe data were collected over two measurement periods (i) winter: 17/01/2018 - 09/02/2018 and (ii) pre-monsoon: 02/05/2018 - 25/05/2018, by the University of Birmingham.\r\n\r\nThese data were collected as part of the ASAP-Delhi project as part of the Atmospheric Pollution and Human Health in an Indian Megacity (APHH) programme.",
    "keywords": "APHH, ASAP-Delhi, black carbon",
    "publicationState": "published",
    "dataPublishedTime": "2021-03-25T15:29:35",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32251/?format=api",
        "dataPath": "/badc/aphh/data/delhi/asap-delhi/bham-bc-ae33",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2632332,
        "numberOfFiles": 3,
        "fileFormat": "Data are NASA Ames formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8848/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2612/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were collected, quality controlled and prepared for archiving by the instrument scientists before upload to the Centre for Environmental Data Analysis (CEDA) for long term archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24808/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/32248/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/32257/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/32625/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143469/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143470/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143471/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143472/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143473/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143475/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143476/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143474/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168358/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143477/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143478/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/32252/?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"
        }
    ]
}