Time as x-axis in chart with Apple Numbers

Solution 1:

This can't be done with an area graph. You need to use a scatter graph, or to insert hidden rows for each increment missing. This has been an annoyance of mine for a long time — I have provided feedback to Apple and you may do so too.

Solution 2:

you need an x-y scatter (or a x-y balloon, though I haven't tried this one) The most important part is to NOT USE the row and column headers! enter your data in two columns, the first column is the time data formatted as such, the second column is the value corresponding to the time. Numbers is not very good at charting. The category style charts are flat out misleading for time-series data, it should not be charted as categories on the x-axis! (this is not just confined to numbers - the other spreadsheets are just as bad). Good luck. You may be able to put the time in any order, and also have multiple y columns (dependant variables). I may get back to you on this one.