Calculate value for y by x with SCISplineMountainRenderableSeries

You can perform hit-test programmatically and get Y-Value, like this:

        // create SCIHitTestInfo which will hold hit-test info
        let info = SCIHitTestInfo()

        // Get a coordinate from your X-Point, alternatively pass exact location
        let xCoord = xBottomAxis.currentCoordinateCalculator.getCoordinate(1.8)

        // perform hit-test
        rSeries.verticalSliceHitTest(info, at: CGPoint(x: CGFloat(xCoord), y: 0.0))

        // create series info object which will hold values, you are interested in
        let seriesInfo = rSeries.seriesInfoProvider.seriesInfo

        // update seriesInfo with hit-test info
        seriesInfo.update(info, interpolate: true)

        // get the Y-Value
        print((seriesInfo as? SCISplineXySeriesInfo)?.yValue)

You can find more about Hit-Test API here:

Let us know if it works for you

Hi, there.

You can use one of our modifiers, SCICursorModifier, SCIRolloverModifier or SCITooltipModifier and set its property “useInterpolation” to true, like this:

let cursor = SCICursorModifier()
cursor.useInterpolation = true

And you will get the Y-Point like on the screenshot.

You can find more about Modifiers API here:

Let us know if it works for you.