I did try that, and was very excited for a moment... but then I realised that, actually, what it plotted like that was meaningless. What it does when I make the 'point' continuous, is plot the Y coordinate against the point, and then also the Y coordinate against the X: notice in your image that the area charts are actually for Y vs Point rather than for Y vs X. The X got shoved off to the side...
I need for X to plot aginst Y in the order of 'point' (which is why I had to make it discrete).
Is there anything I can do while point is discrete??
When using a Line mark type, the "Path" shelf defines the order in which the line is drawn. In your case, put the Point on Path and it will draw the line in order. Any discrete field on the Color, Label, shelf or Level of Detail will slice the mark into multiple lines. So, for example, in your data if you put "Side" on color, you'll get two lines for L and R.
I've attached a workbook to demonstrate.
Here it is filtered to show only the R side.
Wheel Profile.twbx.zip 83.9 KB
Hmm... using 'path' (a new one to me!) plots the data in a more correct way than I was trying to - but the line doesn't look right. I wonder if that is more to do with **** data than what I'm doing.
This looks like the right way to go - just have to go chase down the provider of the sample data and see how much I can trust it!