Question

我正在异步地向系列添加点数，这就是我失去标准的氧气图缩放的原因。我想在函数ZoomFunction()中恢复它但是如何从PlotModel.Series获取PlotModel.Axes[1].Zoom()的最大和最小Y值？

namespace WpfApplication2
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {

        public MainWindow()
        {
            InitializeComponent();
            DataContext = new Data();
        }
    }

    public class Data
    {
        public PlotModel PlotModel {get;set;}

        public Data()
        {
            PlotModel = new PlotModel();
            AddAxes(PlotModel);
            AddHistoryAsync(PlotModel);
        }

        public void AddHistoryAsync(PlotModel PlotModel)
        {
            Action<PlotModel> History = new Action<PlotModel>(AddHistory);
            IAsyncResult result = History.BeginInvoke(PlotModel, null, null);
        }

        public void AddAxes(PlotModel PlotModel)
        {
            var XAxis = new LinearAxis
            {
                Position = AxisPosition.Bottom
            };
            var YAxis = new LinearAxis
            {
                Position = AxisPosition.Left
            };
            PlotModel.Axes.Add(XAxis);
            PlotModel.Axes.Add(YAxis);
        }

        public void AddHistory(PlotModel PlotModel)
        {
            System.Threading.Thread.Sleep(3000);
            Random rnd = new Random();

            LineSeries LS = new LineSeries();
            for (int i = 0; i < 10; i++)
            {
                LS.Points.Add(new DataPoint(i, rnd.Next(1,100)));
            }
            PlotModel.Series.Add(LS);
            ZoomFunction(PlotModel);
            PlotModel.InvalidatePlot(false);
        }

        public void ZoomFunction(PlotModel PlotModel)
        {

        }
    }
}

Answer 1

你试过Axes.Reset()吗？这将重置绘图的轴，Oxyplot将自动缩放，以便再次显示所有数据。

public void ZoomFunction(PlotModel PlotModel)
{
    foreach (var axes in PlotModel.Axes)
    {
        axes.Reset();
    }
    PlotModel.InvalidatePlot(true);
}

我希望这会对你有所帮助！

从PlotModel获取系列

1 个答案: