set terminal latex set output "eg4.tex" set format y "$%g$" set format x "$%.2f$" set title "This is $\sin(x)$" set xlabel "This is the $x$ axis" set ylabel "$\sin(x)$" set nokey set xtics -pi, pi/4 plot [-pi:pi] [-1:1] sin(x)
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Since pi is a predefined variable in GNUPLOT, we can use it anywhere we may use an expression. The set xtics command here specifies that the tics on the x axis start at - π and increment by π/4. Since no end point is given, the tics continue to the right edge. We have also turned off the key, and changed the format to restrict the x-axis tic labels to 2 decimal places.
With a little more work, the plot can look even better. Another form
of this command allows us to specify the label and position of each
tic individually. Replacing the above set xtics command with
the following gives us Figure . We also make use of the line
continuation character, the backslash (\
), to spread out this
command for readability.
set xtics ("$-\pi$" -pi,\ "$-\frac{\pi}{2}$" -pi/2,\ "0" 0,\ "$\frac{\pi}{2}$" pi/2,\ "$\pi$" pi)
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