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/1641/?format=api

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

{
    "ob_id": 1641,
    "uuid": "cae727519c5c5141aabe684a16621827",
    "title": "Halogen Occultation Experiment (HALOE):  Level 3 data on  Upper Atmosphere Research Satellite UARS for 1991-2000",
    "abstract": "The Halogen Occultation Experiment (HALOE) is one of 10 instruments aboard the Upper Research Satellite (UARS), which used solar occultation technique to measure global stratospheric and mesospheric profiles of pressure, temperature, O3, HCl, HF, CH4, H2O, NO, NO2 and aerosol extinction. The dataset contains approximately 30 sunset and sunrise profiles per day between 80S and 80N from October 1991 to 1994. Data are level 2 products i.e. profiles at actual measurement location and not interpolated in horizontal. Data are version 19.",
    "keywords": "HALOE, Chemistry, Temperature, Pressure",
    "publicationState": "published",
    "dataPublishedTime": "2007-01-16T16:58:30",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/1642/?format=api",
        "dataPath": "/badc/haloe/data/haloel3",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 525703767,
        "numberOfFiles": 69082,
        "fileFormat": "The data are provided in an IEEE Unix binary format. \r\n"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3667/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/6/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21817/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22422/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22428/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22445/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24714/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24716/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24717/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24718/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25383/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25386/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25394/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25396/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25397/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25398/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25403/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25890/?format=api"
    ],
    "dataLineage": "Data collected by instruments on board the Upper Research Satellite (UARS)between the 11th October 1991 until 21st November 2005. HALOE Level 2 was acquired as is in the late 1990's and was updated in the BADC archive monthly until 2005. HALOE-L3 data was acquired as is in 2000.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1223/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8633/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10365/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/1633/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/1640/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5063/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5067/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5061/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5065/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5064/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5068/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/5062/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54650/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52058/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/1646/?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"
        }
    ]
}