Hello,
my project uses XamCategoryCharts aswell as some XamDataCharts in which both I am displaying line series. I got the problem that in the XamDataChart the markers and Lines are being cut off by the boundaries of the graph area. I don't have this problem with XamCategoryCharts. I included a screenshot of both graps:

XamDataChart (above)

XamCategoryChart (above)

This is the xaml code for both of them:

<ig:XamDataChart Visibility="Visible" x:Name="ProductionHistoryChart" DataContext="{Binding ProductionHistory}" Margin="20,120,50,20">
	<ig:XamDataChart.Axes>
		<ig:TimeXAxis x:Name="xAxis" Title="Vergangene Minuten" ItemsSource="{Binding DataContext, ElementName=ProductionHistoryChart}" DateTimeMemberPath="TimeInterval">
			<ig:TimeXAxis.Intervals>
				<ig:TimeAxisInterval Interval="1" IntervalType="Minutes" />
			</ig:TimeXAxis.Intervals>
			<ig:TimeXAxis.LabelFormats>
				<ig:TimeAxisLabelFormat Format="HH:mm"/>
			</ig:TimeXAxis.LabelFormats>
			<ig:TimeXAxis.TitleSettings>
				<ig:TitleSettings FontSize="40"/>
			</ig:TimeXAxis.TitleSettings>
			<ig:TimeXAxis.LabelSettings>
				<ig:AxisLabelSettings Extent="100" FontSize="25"/>
			</ig:TimeXAxis.LabelSettings>
		</ig:TimeXAxis>
		<ig:NumericYAxis Title="Stück pro Minute" x:Name="yAxis">
			<ig:NumericYAxis.TitleSettings>
				<ig:TitleSettings Angle="270" FontSize="40"/>
			</ig:NumericYAxis.TitleSettings>
			<ig:NumericYAxis.LabelSettings>
				<ig:AxisLabelSettings Extent="100" VerticalAlignment="Bottom" FontSize="25"/>
			</ig:NumericYAxis.LabelSettings>
		</ig:NumericYAxis>
	</ig:XamDataChart.Axes>
	<ig:XamDataChart.Series>
		<ig:LineSeries MarkerOutline="White" Thickness="15" ItemsSource="{Binding DataContext, ElementName=ProductionHistoryChart}" ValueMemberPath="Value" XAxis="{Binding ElementName=xAxis}" YAxis="{Binding ElementName=yAxis}">
			<ig:LineSeries.ToolTip>
				<StackPanel Orientation="Vertical">
					<TextBlock Text="{Binding Item.TimeInterval,StringFormat=HH:mm}" FontSize="30" FontWeight="Bold" />
					<StackPanel Orientation="Horizontal">
						<TextBlock FontSize="30" Text="Stück: " />
						<TextBlock FontSize="30" Text="{Binding Item.Value}"/>
					</StackPanel>
				</StackPanel>
			</ig:LineSeries.ToolTip>
		</ig:LineSeries>
	</ig:XamDataChart.Series>
	<ig:XamDataChart.Brushes>
		<ig:BrushCollection>
			<SolidColorBrush Color="#004c63"/>
			<SolidColorBrush Color="#00988c"/>
		</ig:BrushCollection>
	</ig:XamDataChart.Brushes> 
</ig:XamDataChart>
<ig:XamCategoryChart Visibility="Visible" IsTransitionInEnabled="False" IsVerticalZoomEnabled="False" IsHorizontalZoomEnabled="False"
	 MarkerOutlines="0" MarkerBrushes="White" Thickness="15" Margin="10,120,10,10" YAxisLabelFontSize="25"
	 XAxisLabelFontSize="25" YAxisTitleFontSize="40" XAxisTitleFontSize="40" XAxisTitle="Zeitverlauf"
	 YAxisTitle="Stück pro Minute" ChartType="Line" x:Name="productionHistory" ItemsSource="{Binding ProductionHistory}">
	<ig:XamCategoryChart.Brushes>
		<ig:BrushCollection>
			<SolidColorBrush Color="#004c63"/>
			<SolidColorBrush Color="#00988c"/>
		</ig:BrushCollection>
	</ig:XamCategoryChart.Brushes>
</ig:XamCategoryChart>