使用OxyPlot获取范围的坐标

// 假设你有一个 PlotModel 实例
PlotModel plotModel = new PlotModel { Title = "Example" };

// 添加一个线性轴
LinearAxis linearAxis = new LinearAxis { Position = AxisPosition.Bottom };
plotModel.Axes.Add(linearAxis);

// 获取轴的范围
double min = linearAxis.ActualMinimum;
double max = linearAxis.ActualMaximum;

// 假设你有一个 LineSeries 实例
LineSeries lineSeries = new LineSeries { Title = "Series 1" };

// 添加一些数据点
lineSeries.Points.Add(new DataPoint(1, 2));
lineSeries.Points.Add(new DataPoint(3, 4));

// 获取数据点的坐标
foreach (var point in lineSeries.Points)
{
    double x = point.X;
    double y = point.Y;
}

// 设置轴的最小值和最大值
linearAxis.Minimum = 0;
linearAxis.Maximum = 100;

// 确保数据点正确添加到数据系列中
lineSeries.Points.Add(new DataPoint(1, 2));
lineSeries.Points.Add(new DataPoint(3, 4));

// 确保数据系列的类型正确
plotModel.Series.Add(linearAxis);