Extra space to the right of chart

[moon47usaco]

I would like to add extra space to the right of the chart, not the margin but in the chart itself.

Here are two screen shots of a program that has a setting for this.

The first is what I get by default in Charts and second is what I would like to get. Only extra space on the right side of the chart.

[liuxuan30]

I think it can be done by using below properties.

        self.xAxis.spaceMin = 5
        self.xAxis.spaceMax = 5

Tried in

open class LineChartView: BarLineChartViewBase, LineChartDataProvider
{
    internal override func initialize()
    {
        super.initialize()
        
        renderer = LineChartRenderer(dataProvider: self, animator: _animator, viewPortHandler: _viewPortHandler)

        self.xAxis.spaceMin = 5
        self.xAxis.spaceMax = 5
    }

result:

[moon47usaco]

Is there a way to set that without editing the charts codebase?

IE editing the LineChartViw class works with self but trying

        lineChartView.xAxis.spaceMin = 100
        lineChartView.xAxis.spaceMax = 100

in the view controller has no affect.

I would prefer not to have to keep track of edits to the charts codebase that I have to reimplement when there is an update to the codebase.

[liuxuan30]

well, spaceMax has no effect means you made mistakes. Try with ChartsDemo.

[moon47usaco]

I see.

I usually have all the variables set in a function that is called from inside "viewDidLoad"

IE:

       open class LineDemoViewController: NSViewController
       {
           @IBOutlet var lineChartView: LineChartView!
    
      override open func viewDidLoad()
      {
          super.viewDidLoad()
          setData()    
      }

      func setData() {
        ...
        lineChartView.doubleTapToZoomEnabled = false
        lineChartView.xAxis.labelTextColor = NSUIColor.white
        lineChartView.xAxis.labelPosition = .bottom
        lineChartView.xAxis.spaceMax = 10
    }

It appears that this will not work like "labelPosition" and other variables and it must be set inside the "viewDidLoad()"

Why is that?

IE:

open class LineDemoViewController: NSViewController
       {
       @IBOutlet var lineChartView: LineChartView!
    
      override open func viewDidLoad()
      {
        super.viewDidLoad()
        setData()    
        lineChartView.xAxis.spaceMax = 10
    }

But this does not work for the combined chart?

open class LineDemoViewController: NSViewController
       {
       @IBOutlet var lineChartView: LineChartView!
    
      override open func viewDidLoad()
      {
        super.viewDidLoad()
        setData()    
        lineChartView.xAxis.spaceMax = 10
        combinedChartView.xAxis.spaceMax = 10
    }

[moon47usaco]

FYI the spaceMax does not work on the iOS demo either for the combined chart.

adding _chartView.xAxis.spaceMax = 10; to the "LineChart1ViewController.m" works but not to the "CombinedChartViewController"... =[

Is there another separate variable that controls this for combined charts?

[liuxuan30]

combined chart does not work on my side is because in the controller, it sets axisMinimum and axisMaximum, once you comment them out, it would work:
(ignore the granularity issue)

[moon47usaco]

Got it thank you.