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How to show custom text on Y-axis of Line Chart? #1720
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It's not complicated let leftAxis = scatterChartView.leftAxis
leftAxis.valueFormatter = DoubleAxisValueFormatter(postFixe: "m/s") and open class DoubleAxisValueFormatter : NSObject, IAxisValueFormatter
{
open var postFixe :String = ""
public init(postFixe: String)
{
self.postFixe = postFixe
}
public func stringForValue(_ value: Double, axis: AxisBase?) -> String
{
let formatter = NumberFormatter()
formatter.minimumFractionDigits = 2
formatter.maximumFractionDigits = 2
formatter.localizesFormat = true
let num = NSDecimalNumber(value: value)
let strVal = formatter.string( from: num)
let str = strVal! + " " + postFixe
return str
}
} |
edited @thierryH91200 post. good job! |
Guys thanks for helping out, however I'm using version 2.2.5. Can you help out as I believe the above answer is valid only for 3.0 and above of charts version. And also it's just I want to display 'visits/day', no number. Left axis just has a textual unit representation. Thanks in advance. |
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I'm using line chart view in my app. Here's the screenshot of the line chart.
![line chart](https://cloud.githubusercontent.com/assets/7326600/19725397/ee8a12bc-9ba2-11e6-86c8-d7f7f668a91d.png)
However I don't want the auto-calculated values on the y-axis (e.g 1.800, 2.000, 2.200), instead I want to put my unit value, e.g 'miles/h', 'meters/sec' etc.
How can I achieve this?
I also want to toggle values on a node when tapped. Is there a way to achieve this?
I've searched for the first one I didn't find it.
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