Gnuplot: how to add y2 axis scale for different units

Question

I\'m plotting data from a file. The data points are in metric units. I want to show a second scale on the right (y2) that\'s in standard units.

The file represents r

Answer 1

Version 5.0 added support for this kind of relations between the y and y2 (or also x and x2) axis:

set xrange[0:370]
set ytics nomirror
set y2tics
set link y2 via 0.2248*y inverse y/0.2248
plot x