Thanks, to be more specific, the Text Alignment doesn't work, replace your XAML grid with this:

<ig:XamDataChart x:Name="chart" Background="Transparent" PlotAreaBackground="Transparent" HorizontalAlignment="Stretch" Height="200" >

<ig:XamDataChart.Axes>
<ig:CategoryYAxis x:Name="yAxis" Interval="4"
Label="{}{Time:dddd}"
ItemsSource="{StaticResource datapoints}"
Background="White">
<ig:CategoryYAxis.LabelSettings>
<ig:AxisLabelSettings Foreground="Red" Padding="0,0,0,0" TextAlignment="Right"></ig:AxisLabelSettings>
</ig:CategoryYAxis.LabelSettings>
</ig:CategoryYAxis>

<ig:NumericXAxis x:Name="xAxis" Interval="1" Label="{}{}" Background="White">
<ig:NumericXAxis.LabelSettings>
<ig:AxisLabelSettings Foreground="Red" Padding="0,0,0,0" TextAlignment="Right" ></ig:AxisLabelSettings>
</ig:NumericXAxis.LabelSettings>
</ig:NumericXAxis>
</ig:XamDataChart.Axes>

<ig:XamDataChart.Series>
<ig:BarSeries ItemsSource="{StaticResource datapoints}"
ValueMemberPath="Value"
XAxis="{Binding ElementName=xAxis}"
YAxis="{Binding ElementName=yAxis}"></ig:BarSeries>


</ig:XamDataChart.Series>

</ig:XamDataChart>

I agree that they aren't an easy fit for MVVM. Having spent quite some time studying the DataChart codebase, I can tell you that it's more than likely by design. 

Having overseen multiple full scale multi million pound (GBP) applications, it's clear that you've got to tread carefully to avoid performance problems in WPF generally. My educated guess is that the DataChart has been optimised for performance and some of the data binding has been scaled back to this end.

I simply extend the Infragistics charts, add the desired functionality in the derived class, and then use them in MVVM in exactly the same way. It doesn't break the pattern, it's just another control that exists in the view and binds to a view model.

It would be my advice to anyone looking to use these controls in a purely MVVM manor to avoid them. Too many of the answers from Infragistics point back to code behind which to my mind suggest a hastily put together Windows Forms solution for XAML.

It's working if I do it in the xaml, but not when I'm trying to apply it in a style. Only thing I can assume is its some sort of bug.

Gary,

I did manage to access the settings by using code behind (yuck) but the results were not satisfactory. The combination of text alignment and extents gave pretty poor results. 

Pete

I'm having a very similar issue, except I can't access it from code behind. I think there might be a bug involved. Attached is a sample project showing whats happening. It seems like if the CategoryYAxis LabelSettings are done in a style, they're not applied. I created two tiles, one that has the same exact code except the content is done explicitly, and the other is done in a style. You can however change the NumericXAxis labelsettings and those changes do get applied.

Any ideas of a work around or solution?

Thanks in advance.