SciChart® the market leader in Fast WPF Charts, WPF 3D Charts, and now iOS Charting & Android Chart Components

Welcome to the SciChart Community Forums!

Please use the forums below to ask questions about SciChart. Take a moment to read our Question asking guidelines on how to ask a good question and our support policy. We also have a tag=SciChart on Stackoverflow.com where you can earn rep for your questions!

Please note: SciChart team will only answer questions from customers with active support subscriptions. Expired support questions will be ignored. If your support status shows incorrectly, contact us and we will be glad to help.

Answered
1
0

Hi,

Is there any possible way to get axis value for a point in chart view? I use pan gesture to get the touch location and convert it to its context point but cannot find the value for that CGPoint.

Thanks,
Irmak

Version
1.2.0.8
  • You must to post comments
Best Answer
2
0

Good day

Need more information to be more specific
But here is example how to write to console X and Y data values at pan gesture location on surface:

//create custom modifier
class CoordToConsole : SCIGestureModifier {
    override func onPanGesture(gesture: UIPanGestureRecognizer!, at view: UIView!) -> Bool {
        let xCalc : SCICoordinateCalculator = self.xAxis().getCurrentCoordinateCalculator()
        let yCalc : SCICoordinateCalculator = self.yAxis().getCurrentCoordinateCalculator()

        let location : CGPoint = gesture.locationInView(view)

        NSLog( "X: %.2f Y: %.2f",
               xCalc.getDataValueFrom( Double(location.x) ),
               yCalc.getDataValueFrom( Double(location.y) ))

        return true
    }
}

And

// create instance and attach it to surface
    let coordLog = CoordToConsole()
    let groupModifier = SCIModifierGroup(childModifiers: [otherModifier1, otherModifier2, coordLog])
    chartSurface.chartModifier = groupModifier // where chartSurface is SCIChartSurface

Best regards
Andrii
SciChart iOS developer

  • Irmak Can Ozsut
    Hi Andrii,Thank you for your quick reply. That’s what I was looking for!But I have one more issue regarding to SCIAxisMarkerAnnotation that I could not find. Can I customise the look of it or should I implement my own axis marker? And lastly, can I add another pan gesture to annotation pin to change the axis annotation location by the user?Thanks, Irmak
  • Andrew
    Hi Irmak – it’s worth asking a separate question for each of these, as the Q&A format of the forum is not suited to long conversations. Can you do this please? I will also ask the team for their input. Best regards, Andrew
  • Irmak Can Ozsut
    Sure, thank you.
  • You must to post comments
Showing 1 result
Your Answer

Please first to submit.