OxyplotExample/OxyPlotExample/GettingStarted/MainWindow.xaml

<Window x:Class="GettingStarted.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:local="clr-namespace:GettingStarted"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:views="clr-namespace:GettingStarted.Views"
        Title="MainWindow"
        Width="800"
        Height="450"
        Closing="Window_Closing"
        mc:Ignorable="d">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="3*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <views:MainViewControl Grid.Row="0" />
        <views:MainViewControl2 Grid.Row="1" />
        <views:MainViewControl3 x:Name="vcRT" Grid.Row="2" />

        <views:FIRFilterView Grid.Column="1" Grid.RowSpan="3" />
    </Grid>
</Window>