Using gnuplot with hidpi screen.
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gnuplot automatically loads an initialization file on startup, which you can use to change the default line widths, etc. It accepts the usual gnuplot syntax. Check help initialization
to see what it is named and where to put it on your system.
Use for example. set terminal wxt lw 2
to change the default absolute line width. The dimensions shown in the later graphics command are simply multipliers for the terminal setup. The width of points and borders / ticks are scaled accordingly.
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