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/843/?format=api

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

{
    "ob_id": 843,
    "uuid": "47adcb7e332ddfab9e9be9b43ea6ac1f",
    "title": "CWAVE: Advanced Along-Track Scanning Radiometer (AATSR) measurements from Envisat",
    "abstract": "The Cloud and Water Vapour Experiment (CWAVE) was a measurement campaign at the CCLRC-Chilbolton Observatory; it was supporting associated with two EC FP5 projects, CLOUDMAP2 and CLOUDNET. A wide range of satellite and ground based instruments measured a variety of atmospheric properties ranging from cloud parameters to water vapour. In addition, the measurements coincided with the results from a reduced resolution Unified Model (UM) run by the Met Office. This dataset contains advanced along-track scanning radiometer measurements.",
    "keywords": "CWAVE, AATSR",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-09T17:24:22",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/844/?format=api",
        "dataPath": "/badc/cwave/satellite/aatsr",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 948284302,
        "numberOfFiles": 141,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/235/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/18403/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65544/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65545/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65546/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65553/?format=api"
    ],
    "dataLineage": "Data were collected by the Chilbolton Observatory and prepared by facility staff before submission to BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/565/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/816/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/813/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2748/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2750/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2751/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54227/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/850/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2570/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "cwave",
            "label": "restricted: cwave group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/cwave.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}