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kibanakibana-6

Kibana visualization - Customize legend labels

I have a stacked bar chart, split by a boolean field. This causes the legend to appear with two colours (cool!) but the legend has these values: true and false. To the reader, there is no context for what is true or false means.

enter image description here

In this case, the field name is is_active.

At the very least having the field name appear in the legend will help people read and understand the chart.

Better: Is there a way to replace "true" and "false" with "Active" and "Inactive" respectively?

I tried this Advanced->JSON Input:

{
  "script": {
    "inline": "doc['is_active'].value ? 'Active' : 'Inactive'",
    "lang": "painless"
  }
}

Which results in an error "String cannot be cast to java.lang.Number". If I replace the strings in the JSON Input with numbers, the numbers do indeed appear in the legend. No help though.

Solution

  • Instead of using term aggregation in split series bucket, use filter aggretation. Create two filters, one for true and one for false and apply custom labels there.