Dates not recognised in scatter graphs

I have some data consisting of date-value pairs which I want to graph on what I would call an x-y graph, but which some call a scatter graph.
So I want each date plotted along the x-axis with the value up the y-axis.
However, when I create a graph, Numbers doesn't recognise the dates as dates, so uses them as discrete categories, ie with each date equally spaced across the x-axis, even though the dates themselves aren't evenly spaced.
For example, if I had dates of 1-Jan-14, 3-Jan-14, 15-Jan-14, 6-Jun-14, Numbers would space them all evenly.
The cells containing the dates are properly formatted as dates. It's only the graph that doesn't seem to pick up on the data being date-based.
I read various other threads which say this was a problem with earlier versions of Numbers 3 but was fixed (in version 3.1 IIRC). I'm using 3.2, and it's not fixed for me!
I'm a UK-based user and therefore use international date formats (as opposed to US date format). Could this be part of the problem?
TIA
David

Hi David,
A Scatter Plot requires that X and Y are not in Header Columns. You can have a Header Row for the axis titles (but they don't appear as titles on the plot; not sure how to make that happen without manually entering the titles on each axis).
X values need not be evenly spaced. X axis label values will be linear and will not be categories. Nor will they line up with individual X values (which is how a Scatter Plot should behave).
Column B looks like it is a Header Column, but it isn't. That grey fill happens after clicking on Edit Data References (non-intuitive IMHO).
Regards,
Ian.

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