Hi Stefan,

That's perfect!  Thank you so much for your help.

Actually, I'm quite surprised the XamChart can't do this as a built-in feature.  That's not meant as a criticism, just an observation.

Next question: if you plot 2 ColumnSeries on a CategoryXAxis, the columns appear side-by-side in each category.  On a CategoryDateTimeXAxis, one column appears on top of the other, so if the top column has a greater value, you can't see the other column underneath.  Can the former behaviour be duplicated on a CategoryDateTimeXAxis?

Thanks again for the answer,

John

Hello John,

Thank you for your feedback. I am glad that you resolved your issue and I believe that other community members may benefit from this as well.

Thanks again.

Hi Stefan,

Thanks for the reply.  I see what you are saying.  Isn't the CategoryDateTimeXAxis misnamed, then?  I was going to ask what the difference is between that and a <non-Category>DateTimeXAxis, but I see there isn't one, so that answers that question!  To me, if two bars appear in the same category, that implies that they occurred on the same day (in my example), but not which order they occurred in.  I have got rouind it by using a simple CategoryXAxis, anyway.

Thanks for your help.

John

Hello John,

Our developers said that the date time axis is mainly used for continuous data, such as line, spline, area series. With a column series, if you display two columns with the same date time value side by side on a time axis, you are implying that one happened before the other, which wouldn't be true. Column-type series are best used with regular category axes.

Thanks Stefan, I appreciate your help.

I would have thought a SumBy or CountOf attribute on a DataSeries would be useful in all sorts of situations for producing summary charts, not necessarily just dates.

Regards,

John