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/7670/?format=api

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

{
    "ob_id": 7670,
    "uuid": "fa176b4ebd24c5247f9a9590d9e05670",
    "title": "NAMBLEX: NO2, NO3, IO, BrO, OIO, I2 Measurements from the University of East Anglia's Differential Optical Absorption Spectrometer (DOAS) Deployed at the Mace Head Research Facility, Ireland",
    "abstract": "The North Atlantic Marine Boundary Layer Experiment (NAMBLEX) campaign was conducted at Mace Head in Ireland from 24 July 2002 to 3 September 2002. During this campaign a suite of instruments, including several from the Universities Facility for Atmospheric Measurements (UFAM). This dataset consists of NO2, NO3, IO, BrO, OIO, I2 measurements from the University of East Anglia's Differential Optical Absorption Spectrometer (DOAS), now the University of Leeds/UFAM's DOAS.",
    "keywords": "NAMBLEX, Atmospheric Chemistry, Boundary Layer",
    "publicationState": "published",
    "dataPublishedTime": "2007-02-25T05:34:11",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12955/?format=api",
        "dataPath": "/badc/namblex/data/uea-doas",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 232547,
        "numberOfFiles": 4,
        "fileFormat": "Data are NASA-Ames 1001 formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3520/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/508/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25982/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/82963/?format=api"
    ],
    "dataLineage": "Data was obtained by the Universities Facility for Atmospheric Measurements (UFAM) instruments in July-September 2002. Data provided as is by the NAMBLEX campaign participants to the BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4970/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/7595/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7592/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31906/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31911/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31910/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31905/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31904/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31907/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31908/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31909/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49617/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49618/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/7672/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2528/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://creativecommons.org/licenses/by/4.0/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}