WPF工具包图表-在条形图上绘制平滑曲线

我似乎无法在同一图表中的条形图上绘制平滑曲线。我没有看到任何与此相关的问题，但可能遗漏了

无论如何，要做到这一点，我想用一个柱系列来表示条形图，用一个线系列来表示曲线。问题似乎是：

1即使X值介于ColumnSeries中存在的点之间，线系列中但不在ColumnSeries中的点始终显示在图表的末尾。我在想，这些中间值可以用来使线性系列曲线平滑

2线型还控制X值之间的间距。我想要的只是用于绘制条之间平滑曲线的线系列。实际上，线系列中有许多点会使钢筋在其应厚的位置非常薄。换句话说，理想情况下，ColumnSeries将控制记号标记和条的厚度，而不是线系列

xaml是

    <Grid>
    <chartingToolkit:Chart x:Name="MainChart" HorizontalAlignment="Left" Margin="59,35,0,0" Title="Chart Title" VerticalAlignment="Top" Height="246" Width="405">
        <chartingToolkit:ColumnSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding BarCollection, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
        <chartingToolkit:LineSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding LineCollection, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
    </chartingToolkit:Chart>
</Grid>

背后的代码是

    /// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window, INotifyPropertyChanged
{
    public MainWindow()
    {
        InitializeComponent();

        this.DataContext = this;

        // Add sample curve points
        LineCollection.Add(new KeyValuePair<double, double>(1, 11));
        LineCollection.Add(new KeyValuePair<double, double>(1.5, 18));
        LineCollection.Add(new KeyValuePair<double, double>(2, 22));
        LineCollection.Add(new KeyValuePair<double, double>(2.5, 35));
        LineCollection.Add(new KeyValuePair<double, double>(3, 42));

        // Primary bars being added
        BarCollection.Add(new KeyValuePair<double, double>(1, 10));
        BarCollection.Add(new KeyValuePair<double, double>(2, 20));
        BarCollection.Add(new KeyValuePair<double, double>(3, 40));
    }

    /// <summary>
    ///   Core event handler for the view model.
    /// </summary>
    public event PropertyChangedEventHandler PropertyChanged;

    /// <summary>
    ///   Routes property changed events.
    /// </summary>
    /// <param name="propertyName"> Defines the property name upon which routing is determined. </param>
    public void OnPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = this.PropertyChanged;

        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }

    ObservableCollection<KeyValuePair<double, double>> barCollection = new ObservableCollection<KeyValuePair<double, double>>();

    public ObservableCollection<KeyValuePair<double, double>> BarCollection
    {
        get
        {
            return barCollection;
        }
        set
        {
            barCollection = value;
        }
    }

    ObservableCollection<KeyValuePair<double, double>> lineCollection = new ObservableCollection<KeyValuePair<double, double>>();

    public ObservableCollection<KeyValuePair<double, double>> LineCollection
    {
        get
        {
            return lineCollection;
        }
        set
        {
            lineCollection = value;
        }
    }


}

谢谢

---

Buck

注意：样本仅包括条形图X值之间的单个数据点。要从线系列中获得平滑曲线，需要更多的数据点。谢谢