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/26225/?format=api

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

{
    "ob_id": 26225,
    "uuid": "b117e4bd7f754d22a65fc823694fa388",
    "title": "ACITES: Land cover data for the Olson and Global Land Cover Facility data sets",
    "abstract": "Model grid cell areas and land cover data for the Olson and Global Land Cover Facility. Data are regridded to a consistent 3 x 3 degree resolution and saved in NetCDF format.\r\nThe Olson land cover dataset was developed from Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) composites covering 1992-1993.\r\nThe Global Land Cover Facility dataset was developed from monthly satellite sensor data of NDVI values for 1987.",
    "keywords": "ACITES, Atmospheric Chemistry, Land Cover",
    "publicationState": "published",
    "dataPublishedTime": "2018-10-16T10:24:39",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26226/?format=api",
        "dataPath": "/badc/acites/data/land_surface_data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 789647,
        "numberOfFiles": 5,
        "fileFormat": "netCDF"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8772/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2203/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52192/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52193/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56837/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56838/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56840/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56841/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56844/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56845/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56846/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56847/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56848/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56849/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56851/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56852/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56853/?format=api"
    ],
    "dataLineage": "Land cover data regridded to the same resolution\r\nas the HTAP model results, approximately 3 x 3 degrees.\r\n\r\n1. The data is in NetCDF format\r\n\r\n2. The area for each 3 x 3 degree grid cell is in area3x3.nc\r\n\r\n3. The land cover data for the Olson and Global Land Cover Facility\r\n   data sets are in:  lc_olson_3x3.nc and lc_umd_3x3.nc\r\n\r\n4. The original Olson land cover data set was obtained from:\r\n   http://acmg.seas.harvard.edu/geos/\r\n\r\n5. The original Global Land Cover Facility data set was obtained from:\r\n   http://www.landcover.org/\r\n\r\n6. See Hardacre et al., Atmos. Chem. Phys., 15, 6419-6436, 2015,\r\n   doi:10.5194/acp-15-6419-2015 for further details on the data\r\n   sets used in this study.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12136/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/26222/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141564/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109695/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141563/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109691/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109693/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112060/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112061/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141562/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109694/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/109692/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/26229/?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"
        }
    ]
}