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/26183/?format=api

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

{
    "ob_id": 26183,
    "uuid": "7b9c3b7d3f554f48b9082bc4dcc9607c",
    "title": "APHH: Formaldehyde (HCHO) measurements made at the IAP-Beijing site during the winter and summer campaigns",
    "abstract": "This dataset contains measurements of formaldehyde using laser induced fluorescence (LIF) made at the  Institute of Atmospheric Physics land station (IAP), Beijing site during the winter and summer campaigns for the Atmospheric Pollution & Human Health in a Chinese Megacity (APHH) programme. \r\n\r\nFormaldehyde concentration measurements in pptv were made using the Leeds Formaldehyde instrument which uses off-resonance laser induced fluorescence at 353 nm to detect ambient formaldehyde. The instrument was calibrated at regular intervals during the campaign using a commercial permatube containing paraformaldehyde.",
    "keywords": "Formaldehyde, HCHO, Laser induced fluorescence, LIF, APHH",
    "publicationState": "published",
    "dataPublishedTime": "2018-07-26T15:56:58",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26190/?format=api",
        "dataPath": "/badc/aphh/data/beijing/leeds-hcho",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2366262,
        "numberOfFiles": 3,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7073/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1856/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51678/?format=api"
    ],
    "dataLineage": "Data produced by Atmospheric Pollution & Human Health (APHH) project participants at University of Leeds and uploaded to Centre for Environmental Data Anaylsis (CEDA) archive.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24808/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/24817/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109545/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109544/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109546/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109564/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109553/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/26185/?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"
        }
    ]
}