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/26527/?format=api

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

{
    "ob_id": 26527,
    "uuid": "651d864cf4d24f6bb321458666793f67",
    "title": "CMORPH 0.25 degree daily precipitation estimates",
    "abstract": "This dataset contains 0.25 degree resolution daily global Climate Prediction Center morphing method (CMORPH) precipitation data. CMORPH is the CPC Morphing technique which derives precipitation estimates from low orbiter satellite microwave observations.",
    "keywords": "CMORPH, rainfall, precipitation",
    "publicationState": "published",
    "dataPublishedTime": "2018-09-10T09:13:45",
    "doiPublishedTime": null,
    "updateFrequency": "unknown",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26625/?format=api",
        "dataPath": "/badc/cmorph/data/0.25deg-DLY_00Z",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3907294558,
        "numberOfFiles": 7823,
        "fileFormat": "Data are binary formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7154/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data taken as is from National Oceanic and Atmospheric Administration.  http://ftp.cpc.ncep.noaa.gov/precip/CMORPH_V1.0/RAW/0.25deg-DLY_00Z/",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/26537/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/26630/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/193352/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111492/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111493/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111495/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111497/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111498/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111499/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132766/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111453/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111494/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111496/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168828/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/26528/?format=api",
    "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"
        }
    ]
}