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/4403/?format=api

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

{
    "ob_id": 4403,
    "uuid": "65ca7898647cc3686492bcb8bb483a1c",
    "title": "SHIP SYNOP reports from ship, buoy and fixed platform stations collected by the Met Office MetDB System",
    "abstract": "The ship based SYNOP messages measurements describe hourly observations from sea based stations (ships, rigs, platforms and moored buoys) distributed globally. The observations cumulate in around 10,000 reports a day, giving measurements of parameters such as wind speed and direction, maximum and minimum air temperature, sunshine duration, rainfall accumulation, and cloud type. The data are collected by observation stations worldwide and transmitted within the ship SYNOP message.",
    "keywords": "Met Office, MetDB, SYNOP, ship, meteorology",
    "publicationState": "published",
    "dataPublishedTime": "2008-08-08T13:51:31",
    "doiPublishedTime": null,
    "updateFrequency": "continual",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/4404/?format=api",
        "dataPath": "/badc/ukmo-metdb/data/shpsyn",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 164043536302,
        "numberOfFiles": 5866,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1251/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/79/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2748/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7063/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7064/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7065/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7067/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7068/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7069/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7070/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7071/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7072/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7073/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7074/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7075/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7076/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7077/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7078/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7079/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7082/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7083/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7084/?format=api",
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    ],
    "dataLineage": "Data are extracted from the Met Office's \"metDB\" system and supplied to BADC. These are then processed to generate BADC-CSV files, where possible. METARS and CLIMAT message types are stored as original message types only within http://data.ceda.ac.uk/badc/ukmo-metdb/raw",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
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    ],
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    ],
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    ],
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    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/4406/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
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