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/10874/?format=api

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

{
    "ob_id": 10874,
    "uuid": "3fe8082c812d88e0014d94c3a2d0a087",
    "title": "Level 2 vector formatted data from the CEH Land Cover Map 2000 for Monks Wood, Cambridgeshire, UK, in support of the Network for Calibration and Validation of EO (NCAVEO) campaign.",
    "abstract": "This dataset contains level 2 vector formatted data derived from the Centre of Ecology and Hydrology's (CEH) Land Cover Map 2000 (LCM2000) data for the Monks Wood, Cambridgeshire, UK, NCAVEO calibration/validation (cal/val) test site. The NERC funded Network for Calibration and Validation of EO (NCAVEO) campaign was designed to illustrate and explain the processes involved in cal/val of earth observation data.",
    "keywords": "",
    "publicationState": "published",
    "dataPublishedTime": "2007-10-19T15:24:23",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/10875/?format=api",
        "dataPath": "/neodc/ncaveo_lcm2000/data/vector/lcmmonkswood/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 1298215,
        "numberOfFiles": 6,
        "fileFormat": "&lt;div property=\"cedacat:formats\"&gt;\r\n&lt;div class=\"formats\"&gt;Data Availability&lt;/div&gt;\r\n&lt;p&gt;Datasets for NCAVEO's UK test sites available through NEODC include:&lt;/p&gt;\r\n&lt;ul class=\"style1\"&gt;\r\n&lt;li&gt;Centre for Ecology and Hydrology (CEH) Land Cover Map 2000 (LCM2000) Data, &lt;a href=\"http://neodc.nerc.ac.uk/browse/neodc/ncaveo_lcm2000/data/raster/\"&gt;25 m derived raster format&lt;/a&gt; \r\n&lt;/li&gt;&lt;li&gt;CEH LCM2000 Data, &lt;a href=\"http://neodc.nerc.ac.uk/browse/neodc/ncaveo_lcm2000/data/vector/\"&gt;Level 2 vector format&lt;/a&gt; &lt;/li&gt;&lt;/ul&gt;\r\n&lt;p class=\"style1\"&gt;If you have further relevant datasets to contribute to this project, please contact &lt;a href=\"mailto:neodc@rl.ac.uk\"&gt;NEODC&lt;/a&gt;.&lt;/p&gt;\r\n\r\n\r\n&lt;/div&gt;\r\n\r\n"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3017/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/531/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "These data were provided to the NERC Earth Observation Data Centre (NEODC)by the NERC Centre for Ecology and Hydrology (CEH). They are a subset of the Land Cover Map 2000 dataset.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/7235/?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/10852/?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/39118/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39123/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39117/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39120/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39121/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39122/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39124/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39119/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/10876/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2583/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "ncaveo_lcm2000",
            "label": "restricted: ncaveo_lcm2000 group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ncaveo_lcm2000.pdf",
            "licenceClassifications": "academic, specific"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}