Hi there, I've uploaded an image of it this time so you can see better.

I have a composite chart with a columnchart and scatterchart added to it.

As you can see, the x index looks ok at the start of the day (ie left hand side of the image), however as the scatterchart progresses it becomes slightly out of sync with the column chart.

By the end of the x axis, both charts are a couple of pixels out of sync.

Hope this explains my problem.

If not than I can send you a sample of my code.

Thanks

Kevin.

This happens because the x axis used for the columns and the x axis used for the scatter points have different scale. Column layers use a string x axis, where all points are equally spaced out and the axis maximum value is the last column index. Scatter layers use a numeric x axis, the scale of which doesn't depend on the number of points, but rather on point values. The max value of numeric axes is typically calculated to maintain a round interval. What you can do is set the manual range on your scatter x axis, like this:

axis.RangeMin = 0; //or set it to one, depending on what you want the min value to be
axis.RangeMax = 23; //or whatever the max value is
axis.RangeType = RangeType.Custom;

You should get something that looks like the attached picture.

Thanks for that,

 Both axis now match perfectly.