I've searched around the net a fair bit and cannot find a way of doing this.
I'm generally OK with excel, but do find their graphs the most infuriating system out there. A gazillion options to make it pretty but nothing that helps you translate the data from tables to graphs
My problem is this: I have two different sets of data I want to put on a single graph (they're dyno plots from my car). I've used some great open source tools like engauge and plotdigitizer to create data values from scanned print outs.
Unfortunately, the x axis (rpm) isn't to the same scale on both drawings, so I have data but where the sampling on the x axis differs, yet it relates to the same variable (rpm).
The only way I can think of doing it now it going over both graphs and picking out the same sample points on the x axis so that they "tie up" when brought into excel.
But surely there has to be a way of "merging" data on the same axis from two different data sets?
Any ideas?


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