custom xAxis for line chart I need an example

[Stay-in-Touch]

I have 4800 y values at 80 values/s. I want teh xAxis Lables to read 0s,15s,30s,45s at the 0,1200,2400 and 3600 positions. It is not at all clear to me how to approach this issue. I would like vertical grid lines from each label!

Living in a time of transition is uncomfortable, and many of the old examples and even running code no longer work. Is there an example of Swift 3 line charts that I could look at.
Thank you

[r-dent]

I would love to see such, too. I created an issue (#1909) with my concrete example. Maybe it helps.

[Stay-in-Touch]

Making some progress....
// xAxis let xAxis = lineChartView.xAxis xAxis.labelPosition = .bottom xAxis.drawLabelsEnabled = true xAxis.labelTextColor = UIColor.red xAxis.labelFont = NSUIFont.systemFont(ofSize: 11.0) let labels = ["0s","15s","30s","45s",""] xAxis.valueFormatter = IndexAxisValueFormatter(values: labels) xAxis.setLabelCount(labels.count, force: true) lineChartView.scaleXEnabled = true

This produces...

Note the 0s in red at the beginning of the x Scale. Problem now is to show the others.
The trick to getting the right number of grid lines is to add the "" for the last position of the scale.

[liuxuan30]

you can take a look at computeAxisValues(), where it generate the x axis value labels.
I don't quite understand what you want, but looks like overriding the func and set the interval to be 15sec seems doable to me.
setting label count would just take interval = (max -min) / labelCount, so the value labels may not see nice.