measureFormatter property
      
      set
      measureFormatter
      (MeasureFormatter? formatter) 
      
    
    
Formatter for measure values.
This is optional. The default formatter formats measure values with NumberFormat.decimalPattern. If the measure value is null, a dash is returned.
Implementation
set measureFormatter(MeasureFormatter? formatter) {
  legendEntryGenerator.measureFormatter =
      formatter ?? defaultLegendMeasureFormatter;
}