ios charts integer convert - ios

Question

I'm using ios Charts 3.0 on the objc project. I had searched the answers on the stackoverflow but no correct results for me. I'm using horizon bar chart and pie chart in my project and tried using
yAxis.valueFormatter = NSNumberFormatter()
yAxis.valueFormatter.minimumFractionDigits = 0
for every axis as well as the custom formatter with this :
- (NSString *)stringForValue:(double)value
axis:(ChartAxisBase *)axis
{
return [#((NSInteger)value) stringValue];
}
Both ways did not work for me. Could you guys please help to resolve this?

Answer 1

Try the code below. I wrote it at Swift and don't know much Objective-C. I hope it helps. I'm using this for BarChart and it works like a charm.
let fmt = NumberFormatter()
fmt.numberStyle = .decimal
fmt.maximumFractionDigits = 0
fmt.groupingSeparator = ","
fmt.decimalSeparator = "."
yAxis.valueFormatter = DefaultAxisValueFormatter.init(formatter: fmt)

Answer 2

You need to extend IValueFormatter protocol with custom formatter class,
import Foundation
import Charts
// Custom value formatter class
class BarValueFormatter : NSObject, IValueFormatter {
// This method is called when a value (from labels inside the chart) is formatted before being drawn.
func stringForValue(_ value: Double,
entry: ChartDataEntry,
dataSetIndex: Int,
viewPortHandler: ViewPortHandler?) -> String {
let digitWithoutFractionValues = String(format: "%.0f", value)
return digitWithoutFractionValues
}
}
Now in your code initialise bar value formatter using custom class. It will remove all precision/franction values.
let chartDataSet = BarChartDataSet(values: <dataSetValues>, label: <stringValue>)
let valueFormatter = BarValueFormatter()
chartDataSet.valueFormatter = valueFormatter