gnuplot - Define font style as a variable

Question

Is it possible to define different font styles (in gnuplot), so that I can refer to them later by an index instead of repeating them all every time, for example: font1 = font "Helvetica,12" ; font2 = font "Verdana, 12" and so on

Answer 1

You can use macros for this.

set macros

With this enabled (in version 5 by default), you can define string variables which are replaced in a command with their content before the command is executed, like

set macros
Helvetica = 'font "Helvetica, 12"'
Verdana = 'font " Verdana, 12"'

set title "My title" @Verdana
set xlabel "My x-label" @Helvetica
plot x