Chart adds a -1 x-axis entry

[narciero]

I have a LineChart's xAxis set up with follwing properties:

xAxis.axisMinimum = 0.0
xAxis.granularityEnabled = true
xAxis.labelPosition = .bottom
xAxis.labelTextColor = UIColor.genioWhite()
xAxis.axisLineColor = UIColor.genioGray()
xAxis.drawGridLinesEnabled = false
xAxis.valueFormatter = StringFormatter(["some date strings"])

I then add 3 entries with x-values of 0.0, 1.0, and 2.0 - however this is what my graph looks like:

While debugging my xAxis value formatter I found that magically an x axis entry of -1 is being created, hence the extra space to the left...the line chart should (as expected) fill the whole width since only 3 data points were added, yet there are 4

[tushuaidianzi]

能不能把这个demo发给我一下，谢谢

[liuxuan30]

Take a look at ChartsDemo for different line charts, including time line chart to get started. By default, it will calculate x axis range. If you don't want it, set xAxis.axisMinimum = whatever you like