iOS Charts ValueFormatter

Question

I am using iOS charts plugin (line chart) and wish to style the chart values (the number above each point) to a decimal number.

The value is a double, but charts by defa

Answer 1

 let data = PieChartData(dataSet: set) 

 let formatter = NumberFormatter() 
 formatter.numberStyle = .percent 
 formatter.maximumFractionDigits = 2 
 formatter.multiplier = 1.0 
 formatter.percentSymbol = "%" 
 formatter.zeroSymbol = "" 
 data.setValueFormatter(DefaultValueFormatter(formatter: formatter))