iOS-Charts Float to Integer YAxis

Question

I'm building a chart using iOS-charts IOS CHART

I'm trying to convert the floats into int, but iOS-charts only allows for Floats in the data entry:

      let result = ChartDataEntry(value: Float(month), xIndex: i)

Does anyone know the method for making sure only ints are used?

score 32 · Answer 1 · answered Oct 19 '16 at 16:56

32

For Swift 3.0 and Charts 3.0 you need to enable and set granularity for the axis.

Example:

barChart.leftAxis.granularityEnabled = true
barChart.leftAxis.granularity = 1.0

answered Oct 19 '16 at 16:56

Seref Bulbul

1,163
12
14

score 10 · Accepted Answer · answered Jul 09 '15 at 19:09

10

You just need to adjust the NSNumberFormatter...

Example:

yAxis.valueFormatter = NSNumberFormatter()
yAxis.valueFormatter.minimumFractionDigits = 0

NSNumberFormatter is a very powerful class, you can do much much more with it. :-)

answered Jul 09 '15 at 19:09

daniel.gindi

3,457
1
30
36

Thanks for you help. I tried this, but sadly it didn't work. Can't find any information on the repo either :( – HannahCarney Jul 17 '15 at 11:22
1

@HannahLouisaCarney It does work. What have you tried? Maybe you are setting the wrong valueFormatter `property`? The different components have that property separate – daniel.gindi Jul 18 '15 at 19:24
You are right, sorry! I added: self.lineChartholder.leftAxis.valueFormatter = NSNumberFormatter() self.lineChartholder.leftAxis.valueFormatter?.minimumFractionDigits = 0 – HannahCarney Jul 20 '15 at 09:09
This doesn't quite work. If the axis range is too small, e.g. 5-8, with 7 gridlines, then it shows 5, 5, 6, 6, 6, 7, 7 in the axis. – andrewtweber Jan 28 '16 at 05:22

score 0 · Answer 3 · edited May 23 '17 at 12:25

This worked for me. However, the y-axis labels will round when displaying small numbers, so if you are charting, say 1 or 2, the chart will display 0 twice. (See here: Force BarChart Y axis labels to be integers?)

let numberFormatter = NSNumberFormatter()
numberFormatter.generatesDecimalNumbers = false
chartDataSet.valueFormatter = numberFormatter
// Converting to Int for small numbers rounds weird
//barChartView.rightAxis.valueFormatter = numberFormatter
//barChartView.leftAxis.valueFormatter = numberFormatter

score 0 · Answer 4 · answered Dec 30 '16 at 21:44

0

You can try this one, it worked nicely for me

let formatter = NSNumberFormatter()
formatter.numberStyle = .NoStyle
formatter.locale = NSLocale(localeIdentifier: "es_CL")
BarChartView.leftAxis.valueFormatter = formatter

answered Dec 30 '16 at 21:44

LastNeoNotTheHero

1
1

score 0 · Answer 5 · answered Oct 16 '18 at 07:53

0

Swift4.2 ; Xcode 10.0 :

let numberFormatter = NumberFormatter()
numberFormatter.generatesDecimalNumbers = false
barChart.leftAxis.valueFormatter = DefaultAxisValueFormatter.init(formatter: numberFormatter)

answered Oct 16 '18 at 07:53

Antony Wong

562
5
17

iOS-Charts Float to Integer YAxis

5 Answers5

Linked