### Nonlinear coordinates systems

- Any plot axis can be assigned a pair of functions, possibly nonlinear, that describe the forward and reverse mapping to a linear range (see set nonlinear (p. )) http://gnuplot.info/demo_5.2/nonlinear3.html`Nonlinear x/y axis demo`

- The familiar command set logscale is re-implemented as a special case of a nonlinear axis where the paired functions are log(x) and exp(x).