2.21.59.5 set style increment

Syntax:

      set style increment {default|userstyles}
      show style increment

By default, successive plots within the same graph will use successive linetypes from the default set for the current terminal type. However, choosing `set style increment user` allows you to step through the user-defined line styles rather than through the default linetypes.

Example:

      set style line 1 lw 2 lc rgb "gold"
      set style line 2 lw 2 lc rgb "purple"
      set style line 4 lw 1 lc rgb "sea-green"
      set style increment user

      plot f1(x), f2(x), f3(x), f4(x)

should plot functions f1, f2, f4 in your 3 newly defined line styles. If a user-defined line style is not found then the corresponding default linetype is used instead. E.g. in the example above, f3(x) will be plotted using the default linetype 3.