Create histogram with group by count (binned data)

Elastic Stack Kibana
3

Sure, I attached all the code below. Thank you!

``` 
{
      "$schema": "https://vega.github.io/schema/vega-lite/v2.json"
      "data": {
        "url": {
          "%timefield%": "@timestamp"
          "%context%": "true"
          "index": "/events-*"
          "body": {
        "size": 0, 
      "aggs": {
              "users": {
                "terms": {
                  "field": "userID", 
                  "size": 10000,
                  "order" : {"eventCount": "desc"}
                }, 
      "aggs": {
                  "eventCount": {
                    "cardinality": {
                      "field": "deviceID"}
                  }
                }
              }
            }
          }
        }
      "format": {"property": "aggregations.users.buckets"}
      }
      "mark": "bar"
      "transform": [
        {
          "aggregate": [
            {"op": "count", "field": "key", "as": "usercount"}
          ]
          "groupby": ["eventCount.value"]
        }
      ]
      "encoding": {
        "x": { "field": "eventCount\\.value", "type": "ordinal", "sort": "descending" }
        "y": { "field": "usercount", "type": "quantitative" }
      }