iOS图表-设置最小y轴范围

对于图表3(在图表3.0.2上试用(，这是有效的：

chartView.leftAxis.axisMinimum = 0

默认情况下，也有一个右轴(至少对于条形图(，如果你不设置，网格将不会对齐：

chartView.rightAxis.axisMinimum = 0

注意：我最初是作为评论写的，但我认为这应该是一个更容易为谷歌用户找到的答案

customAxisMin在最新图表中不推荐使用。

请改用属性axisMinValue！

看看下面的属性。应该能够解决你的问题。

/// A custom minimum value for this axis. 
/// If set, this value will not be calculated automatically depending on the provided data. 
/// Use resetCustomAxisMin() to undo this. 
/// Do not forget to set startAtZeroEnabled = false if you use this method.
/// Otherwise, the axis-minimum value will still be forced to 0.
public var customAxisMin = Double.NaN
/// Set a custom maximum value for this axis. 
/// If set, this value will not be calculated automatically depending on the provided data. 
/// Use resetCustomAxisMax() to undo this.
public var customAxisMax = Double.NaN
/// if true, the y-label entries will always start at zero
public var startAtZeroEnabled = true

例如：

_chartView.leftAxis.customAxisMax = 35;
_chartView.leftAxis.customAxisMin = 0;

或_chartView.leftAxis.startAtZeroEnabled = YES;