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/24578/?format=api

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

{
    "ob_id": 24578,
    "uuid": "b7a04f2e96464fa3997e01b4abddd55c",
    "title": "ARSF 2011_092 - EUFAR HYMEDECOS-EROSION/EUFAR11_03 Flight: hyperspectral remote sensing measurements",
    "abstract": "Hyperspectral remote sensing measurements using the ARSF Optech Airborne Laser Terrain Mapper 3033 LIDAR, ARSF Specim AISA Eagle, ARSF Specim AISA Hawk and ARSF Rollei Digital Camera instruments onboard the NERC ARSF Dornier Do228-101 D-CALM Aircraft for the HYMEDECOS-Erosion- HYperspectral monitoring of MEDiterranean ECOSystems: Soil erosion and water/suspended sediment transport monitoring and modelling in the Isábena catchment (NE Spain) (EUFAR11_03) project (flight reference: 2011_092).\r\n\r\nData were collected over the North East Spain area.\r\n",
    "keywords": "EUFAR11_03, HYMEDECOS-EROSION, aircraft, hyperspectral, remote sensing",
    "publicationState": "published",
    "dataPublishedTime": "2016-08-18T16:03:03",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/24577/?format=api",
        "dataPath": "/neodc/arsf/2011/EUFAR11_03/EUFAR11_03-2011_092_HYMEDECOS_erosion/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 526569445314,
        "numberOfFiles": 2506,
        "fileFormat": "Data are netCDF and ENVI Binary formatted. Ancillary files may be plain ASCII or PDF formatted. Image files may be PNG or JPG formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/6670/?format=api",
    "geographicExtent": null,
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were collected by instrument scientists during the flight before preparation and delivery for archiving at the Centre for Environmental Data Analysis (CEDA).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/19957/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/24579/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/6382/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100607/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100599/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100603/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100604/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100605/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100606/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/106429/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/100598/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/106430/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/106023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/106431/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/24575/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "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"
        }
    ]
}