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/7876/?format=api

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

{
    "ob_id": 7876,
    "uuid": "913397583d98501279927de52c815631",
    "title": "NCAVEO: NERC Field Spectroscopy Facility (FSF) Fabric Calibration Site Reflectance data collected at Chilbolton using an ASD FieldSpec Pro",
    "abstract": "This dataset consists of the reflectance spectra which was collected on the 16th-17th June 2006 from three artificial targets deployed at the Chilbolton Facility for Atmospheric and Radio Research (CFARR), as part of the Network for Calibration and Validation of Earth Observation data (NCAVEO) 2006 Field Experiment. The reflectance data were acquired using an ASD FieldSpec Pro fitted with a contact probe. For further details on each of the data files please see the dataset's metadata document in linked documentation. ",
    "keywords": "NCAVEO, FSF, FABRIC, CHILBOLTON, CFARR",
    "publicationState": "published",
    "dataPublishedTime": "2007-10-16T23:57:52",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12670/?format=api",
        "dataPath": "/neodc/ncaveo_field/data/Field_spectra/Fabric_Spectra",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3937312,
        "numberOfFiles": 13,
        "fileFormat": "The calibrated reflectance spectra data are within NASA Ames files, in text format. Plots of the spectra are in PNG format and photographs showing that fabric sheets pegged out in the field are in JPG files. "
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/2255/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/172/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84669/?format=api"
    ],
    "dataLineage": "These data were provided to NEODC by university of Southampton, who carried out work to convert formats to NASA-Ames, and write metadata documents. The metadata documents describing the processing are archived alongside the data as PDF files.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5116/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/7827/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30128/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32420/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32419/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32422/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32423/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32426/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32421/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/7880/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "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"
        }
    ]
}