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/32688/?format=api

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

{
    "ob_id": 32688,
    "uuid": "feb1e0b5426d4f5c80f791909a3a2d37",
    "title": "High resolution Standardized Precipitation Evapotranspiration Index (SPEI) dataset for Central Asia",
    "abstract": "This dataset contains high-resolution (5 km) Standardized Precipitation Evaporation Index (SPEI-HR) drought data for Central Asia. There are forty-eight different SPEI time scales and the available period is from 1981 - 2018, the data was produced using Climate Hazards group InfraRed Precipitation with Station’s (CHIRPS) precipitation dataset and Global Land Evaporation Amsterdam Model’s (GLEAM) potential evaporation dataset. The SPEI-HR dataset, over time and space, correlates fairly well with SPEI values estimated from coarse-resolution Climate Research Unit (CRU) dataset. Furthermore, the SPEI-HR dataset, for 6-month timescale, displayed a good correlation of 0.66 with GLEAM root zone soil moisture and a positive correlation of 0.26 with normalized difference vegetation index (NDVI) from Global Inventory Monitoring and Modelling System (GIMMS).",
    "keywords": "SPEI, Central Asia, drought",
    "publicationState": "citable",
    "dataPublishedTime": "2021-06-03T08:29:27",
    "doiPublishedTime": "2022-02-28T13:13:25",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32689/?format=api",
        "dataPath": "/badc/deposited2021/spei-central-asia/data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 54700431523,
        "numberOfFiles": 51,
        "fileFormat": "Data are NetCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8980/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2797/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51981/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60423/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60426/?format=api"
    ],
    "dataLineage": "Data was prepared for a Masters Thesis at the Chair of Hydrology and River Basin Management and deposited at the Centre for Environmental Data Analysis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/11032/?format=api"
    ],
    "projects": [],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145750/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145751/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145754/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145755/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145760/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145761/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145762/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168962/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145763/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145764/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/32691/?format=api",
    "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"
        }
    ]
}