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/14427/?format=api

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

{
    "ob_id": 14427,
    "uuid": "4761751d7c844e228ec2f5fe11b2e3b0",
    "title": "ESA Land Cover Climate Change Initiative (Land_Cover_cci):  Global Land Cover Maps, Version 1.6.1",
    "abstract": "As part of the ESA Land Cover Climate Change Initiative (CCI) project a set of Global Land Cover Maps have been produced.  These are available at 300m spatial resolution for three epochs centred on the year 2010 (2008-2012), 2005 (2003-2007) and 2000 (1998-2002), where each epoch covers a 5-year period.\r\n\r\nEach pixel value corresponds to the label of a land cover class defined using UN-LCCS classifiers.  For each epoch, the land cover map is delivered along with 4 quality flags which document the reliability of the classification.  These are described further in the Product User Guides.\r\n\r\nFurther Land Cover CCI products, user tools and a product viewer are available at: http://maps.elie.ucl.ac.be/CCI/viewer/index.php",
    "keywords": "Land Cover, CCI",
    "publicationState": "published",
    "dataPublishedTime": "2016-06-15T11:00:45",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14428/?format=api",
        "dataPath": "/neodc/esacci/land_cover/data/land_cover_maps/v1.6.1",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 15869436328,
        "numberOfFiles": 22,
        "fileFormat": "Data are available in NetCDF and GeoTiff format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3809/?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/12066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55846/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55847/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55848/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55849/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88541/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI Land Cover project and supplied to CEDA in the context 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/14431/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/14430/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55986/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55988/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55985/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55993/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105139/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105317/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55990/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2601/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_landcover_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}