How do I set the value of the x-axis after update ?

[monkeyRing]

the screenshot

[monkeyRing]

xcode 8 Chart2.2.5-Swift3.0

[liuxuan30]

well you should use Chart 3.0. Chart 2.2.5 will EOL soon. Also, just refresh your chart data x values. The code seems fine. Just don't forget to check your entries

[monkeyRing]

@liuxuan30 ok ,thx . Charts 3.0 release yet?

[liuxuan30]

no it's in master

[monkeyRing]

ok . thx

[monkeyRing]

@liuxuan30

i still can't found this after i changed master

[liuxuan30]

Chart 3.0 has changed a lot. Use latest API

[monkeyRing]

ok :) 👍 @liuxuan30

[Rushabh5]

Hello @monkeyRing ,

Are you set xValue in any graph.?

[monkeyRing]

Not yet , I just want to set the x-axis of a chart of the X-coordinate data.
As I always shot as the usage before the update to 3.0.
But after the update to 3.0, you can not find the property of the xValus.
In 3.0v, i had already knew about how to set the x-axis, and the use of IAxisValueFormatter.
:) @rs10693

[Rushabh5]

@monkeyRing So can you please explain me i have create 1 array for store all xvalue and then after fetching using for loop but in bar chart and line chart pass double value so i can't converted in to string. like,

for (int i = 0; i < yAxisArray.count; i++)//individual bar value
{
    double yVal = [[yAxisArray objectAtIndex:i] doubleValue];
    double xVal = [[xVals objectAtIndex:i] doubleValue];

    NSLog(@"%f", xVal);

    [yVals1 addObject:[[BarChartDataEntry alloc] initWithX:xVal y:yVal]];
}

and i want to display string value in x like 26-09,25-09

[monkeyRing]

you should set xvals like this

Class ChartViewController : UIViewController, IAxisValueFormatter //step1
  {
     var xVals = [String]()  // step2,   Declare a global variable array for time
      override func viewDidLoad() {
         super.viewDidLoad()
         setupChartStyle()    // step 3
       }

       func setupChartStyle() {
          combinedChartView.chartDescription?.text = ""
          combinedChartView.noDataText = "加载中..."
          combinedChartView...
          combinedChartView.xAxis.valueFormatter = self   // Important statement, don't forgot this st.
        }

       func setChartData() {   // set ChartData DataSource  step 4
            for i in 0..<data.count {
                xVals.append("Time string formatted")    // In this step, you can format time strings.
            }
       }
}

Formatter Xvals Implementation && IAxisValueFormatter Method

step5

// return xVals value  
    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
        return xVals[Int(value) % xVals.count]
    }
// OR
    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
        return xVals[Int(value)]
    }

After taking time to string array to achieve x-axis formatting method and return

@rs10693

[Rushabh5]

can you describe in objective-c. @monkeyRing bcoz i found IAxisValueFormatter this class in swift. so how to use in obj-c i don't knw.

[monkeyRing]

@rs10693 see the ChartsDemo . the ChartsDemo is described in objective-c

[monkeyRing]

@rs10693

you can see the ChartsDemo . there are the simpleCode

[Rushabh5]

Hello @monkeyRing

Thanks for help but now 1 problem m facing so please help me.

i given a Screen shot and see, in that all barchart are combine. i am using bar and line chart both are display same.

[liuxuan30]

@rs10693 Please refer to ChartsDemo first. Seems you don't setup chart data properly.

[Rushabh5]

Hello @liuxuan30 @monkeyRing

Thank you very much to both of you. now it's perfect.

[oscams]

perfect solution!