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/32422/?format=api

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

{
    "ob_id": 32422,
    "uuid": "05a18921d3a44c89a9158809fd813eb3",
    "title": "MOD09A1 - MODIS/Terra Surface Reflectance 8-Day L3 Global 500m SIN Grid",
    "abstract": "These data are a copy of MODIS data from the NASA Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC). The copy is potentially only a subset. Below is the description from https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/MOD09A1\n\n\n\n\n\nShortname: MOD09A1 , Platform: Terra , Instrument: MODIS , Processing Level: Level-3 , Spatial Resolution: 500 m , Temporal Resolution: 8 day , ArchiveSets: 61, 6 , Collection: MODIS Collection 6.1 - Level 1, Atmosphere, Land    (ArchiveSet 61) , PGE Number: PGE21 ",
    "keywords": "",
    "publicationState": "published",
    "dataPublishedTime": "2021-04-15T14:38:31.845471",
    "doiPublishedTime": null,
    "updateFrequency": "asNeeded",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32423/?format=api",
        "dataPath": "/neodc/modis/data/MOD09A1",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 6727043429785,
        "numberOfFiles": 105629,
        "fileFormat": "HDF"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8905/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64494/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64495/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64496/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64497/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64498/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64499/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64500/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64501/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64502/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64503/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64504/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64505/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64506/?format=api"
    ],
    "dataLineage": "Data were downloaded from https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/ to support UK research groups, especially NCEO.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10852/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/10895/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/10892/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30129/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144355/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144356/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144357/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144358/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144359/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144361/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144362/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144363/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/25855/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2557/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://modaps.modaps.eosdis.nasa.gov/services/faq/LAADS_Data-Use_Citation_Policies.pdf",
            "licenceClassifications": ""
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}