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/14149/?format=api

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

{
    "ob_id": 14149,
    "uuid": "0d2260ad4e2c42b6b14fe5b3308f5eaa",
    "title": "ESA Ozone Climate Change Initiative (Ozone CCI): Level 3 Total Ozone Merged Data Product, version 01",
    "abstract": "This dataset is a monthly mean gridded total ozone data record (level 3) produced by the ESA Ozone Climate Change Initiative project (Ozone CCI).  The dataset is a prototype of a merged harmonised ozone data record combining ozone data from the GOME instrument on ERS-2, the SCIAMACHY instrument on ENVISAT and the GOME-2 instrument on METOP-A, and covers the period between April 1996 to June 2011.",
    "keywords": "ESA, CCI",
    "publicationState": "published",
    "dataPublishedTime": "2016-03-08T16:55:06",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14366/?format=api",
        "dataPath": "/neodc/esacci/ozone/data/total_columns/l3/merged/v0100",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 387470977,
        "numberOfFiles": 186,
        "fileFormat": "Data is in NetCDF format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3802/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13047/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13048/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13049/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13050/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13051/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13052/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI Ozone project team and supplied to CEDA as part of the ESA CCI Open Data Portal Project",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14147/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/14148/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54343/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54344/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54342/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54529/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104864/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105077/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105257/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54346/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2531/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_ozone_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        },
        {
            "ob_id": 1140,
            "name": "ESACCI"
        }
    ]
}