wpf livechart 绘制笛卡尔曲线

先上图：

代码部分：

                <GroupBox Header="各生产线生产量趋势"><Grid><Grid.RowDefinitions><RowDefinition Height="45"/><RowDefinition Height="auto"/><RowDefinition/></Grid.RowDefinitions><Border  CornerRadius="5" Background="#EAEAF7" VerticalAlignment="Center" HorizontalAlignment="Right"Margin="15,0"><Border.Resources><Style TargetType="RadioButton"><Setter Property="Width" Value="40"/><Setter Property="Height" Value="25"/><Setter Property="Background" Value="Transparent"/><Setter Property="FontSize" Value="11"/><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="RadioButton"><Border CornerRadius="5"  Background="{TemplateBinding Background}"><ContentPresenter  HorizontalAlignment="Center" VerticalAlignment="Center" ></ContentPresenter></Border></ControlTemplate></Setter.Value></Setter><Style.Triggers><Trigger Property="IsChecked" Value="True"><Setter Property="Background" Value="#5665F4"></Setter><Setter Property="Foreground" Value="White"></Setter></Trigger></Style.Triggers></Style></Border.Resources><Grid><Grid.ColumnDefinitions><ColumnDefinition/><ColumnDefinition Width="auto"/><ColumnDefinition/><ColumnDefinition Width="auto"/><ColumnDefinition/><ColumnDefinition Width="auto"/><ColumnDefinition/></Grid.ColumnDefinitions><Border Background="#DDD" Width="1" Grid.Column="1" Margin="0,5"/><Border Background="#DDD" Width="1" Grid.Column="3" Margin="0,5"/><Border Background="#DDD" Width="1" Grid.Column="5" Margin="0,5"/><RadioButton Content="天" IsChecked="True"/><RadioButton Content="周" Grid.Column="2"/><RadioButton Content="月" Grid.Column="4"/><RadioButton Content="季度" Grid.Column="6"/></Grid></Border><StackPanel  Margin="20,10" TextBlock.Foreground="#888"  ForceCursor="True"  Grid.Row="1" HorizontalAlignment="Left" Orientation="Horizontal" VerticalAlignment="Center"><Border Width="10" Height="4" Background="#5966F1"/><TextBlock Text="生产线1" Margin="10,0,30,0"/><Border Width="10" Height="4" Background="#01BAC0"/><TextBlock Text="生产线2" Margin="10,0,30,0"/><Border Width="10" Height="4" Background="#FF7371"/><TextBlock Text="生产线3" Margin="10,0,30,0"/><Border Width="10" Height="4" Background="#FFC90C"/><TextBlock Text="生产线4" Margin="10,0,30,0"/></StackPanel><!--CartesianChart Series：序列  axis 轴线  chartesian 笛卡尔 --><lvc:CartesianChart Margin="20,10" Grid.Row="2"><lvc:CartesianChart.Series><lvc:LineSeries  Stroke="#5966F1"  Title="生产线11" LineSmoothness="0"    PointGeometrySize="0" Values="22,28,38,35,30,21,32,40,39,35"><lvc:LineSeries.Fill><LinearGradientBrush  EndPoint="0,1" 
StartPoint="0,0"><GradientStop Color="#095770F0" Offset="0.5"></GradientStop><GradientStop Color="Transparent"  Offset="1"></GradientStop></LinearGradientBrush></lvc:LineSeries.Fill></lvc:LineSeries><lvc:LineSeries Values="8,9,10,9.5,9,9.5,12,8,13,7" LineSmoothness="1"  Title="生产线2"  Stroke="#03B9B7"  PointGeometrySize="0" ><lvc:LineSeries.Fill><LinearGradientBrush StartPoint="0,0" EndPoint="0,1"><GradientStop Color="#09FF7778" Offset="0.5"></GradientStop><GradientStop Color="Transparent" Offset="1"></GradientStop></LinearGradientBrush></lvc:LineSeries.Fill></lvc:LineSeries><lvc:LineSeries Values="8,9,10,9.5,9,9.5,12,8,13,7" LineSmoothness="0" PointGeometrySize="0"Stroke="#FF7778" Title="生产线3"><lvc:LineSeries.Fill><LinearGradientBrush StartPoint="0,0" EndPoint="0,1"><GradientStop Color="#09FF7778" Offset="0.5"/><GradientStop Color="Transparent" Offset="1"/></LinearGradientBrush></lvc:LineSeries.Fill></lvc:LineSeries><lvc:LineSeries Values="4,2,5,4.5,5,4.5,6,7,2,4" LineSmoothness="0" PointGeometrySize="0"Stroke="#FFCA06" Title="生产线3"><lvc:LineSeries.Fill><LinearGradientBrush StartPoint="0,0" EndPoint="0,1"><GradientStop Color="#09FFCA06" Offset="0.5"/><GradientStop Color="Transparent" Offset="1"/></LinearGradientBrush></lvc:LineSeries.Fill></lvc:LineSeries></lvc:CartesianChart.Series><lvc:CartesianChart.AxisX><lvc:Axis Labels="09.01,09.02,09.03,09.04,09.05,09.06,09.07,09.08,09.09,09.10"><lvc:Axis.Separator><lvc:Separator Step="1" StrokeThickness="2"></lvc:Separator></lvc:Axis.Separator></lvc:Axis></lvc:CartesianChart.AxisX><lvc:CartesianChart.AxisY ><lvc:Axis MinValue="0" MaxValue="50" LabelFormatter="{Binding YLableFormater}"><lvc:Axis.Separator><lvc:Separator Step="10" Stroke="#ddd" StrokeThickness="0.5" ></lvc:Separator></lvc:Axis.Separator></lvc:Axis></lvc:CartesianChart.AxisY></lvc:CartesianChart></Grid></GroupBox>