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/6549/?format=api

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

{
    "ob_id": 6549,
    "uuid": "97103f7b94ac7bbf8cc4d1d1adf756b6",
    "title": "APPRAISE ADIENT: Along Track Scanning Radiometer, Version 2 (ATSR 2) Monthly Data",
    "abstract": "The objective of the ADIENT (Appraising the Direct Impacts of aErosol oN climaTe) project was quantifying the direct effect of aerosols on the Earth's radiation budget, via scattering and/or absorption of radiation.  \r\n\r\nThis monthly data is a subset of the GlobAEROSOL climatology from the Along Track Scanning Radiometer (ATSR) instrument on-board ERS-2, data. It spans the period 1 July 1995 to 10 July 2009. \r\n\r\nThe dataset contains measurements of the following parameters over the globe:\r\n\r\nAerosol optical thickness due to aerosol\r\nAngstrom Coefficient average, \r\nAerosol speciation (from a selection of 5 pre-defined types:maritime, continental, desert, urban/polluted and biomass burning).\r\n",
    "keywords": "APPAISE-ADIENT, GlobAEROSOL",
    "publicationState": "published",
    "dataPublishedTime": "2011-03-18T10:12:37",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/6550/?format=api",
        "dataPath": "/badc/appraise/data/adient/globaer/atsr2",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3837144,
        "numberOfFiles": 2,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3324/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data for the period 2005 to 2010, provided as is by the APPRAISE campaign participants for archiving at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4282/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8365/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/6521/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/12228/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28315/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28318/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28319/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28321/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42983/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28317/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28316/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42984/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/46843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/75359/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/6553/?format=api",
    "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"
        }
    ]
}