
# This example shows how a nonlinear axis definition can be used to
# create a "broken axis". X coordinates 0100 are at the left,
# X coordinates 5001000 are at the right, there is a small gap between them.
# So long as no data points with (100 < x < 500) are plotted, this works as expected.
#
# f(x) maps x axis (discontinuous) to shadow axis coords (continuous linear range [0:1000])
# g(x) maps shadow axis coords to x axis readout
#
set title "A 'broken' x axis can be defined using 'set nonlinear x'"
# Define the brokenaxis mapping
axis_gap = 25.
f(x) = (x <= 100) ? x : (x < 500) ? NaN : (x  400 + axis_gap)
g(x) = (x <= 100) ? x : (x < 100 + axis_gap) ? NaN : (x + 400  axis_gap)
set xrange [15:600] noextend
set nonlinear x via f(x) inverse g(x)
set xtics 50.
set xtics rotate by 90 nomirror
set ytics nomirror
set border 3
unset key
# Creation of the broken axis marks (this should be automated)
set arrow 500 from 100, graph 0 to 500, graph 0 nohead lt 500 lw 2 lc bgnd front
set arrow 501 from 100, graph 0 length graph .01 angle 75 nohead lw 2 front
set arrow 502 from 100, graph 0 length graph .01 angle 75 nohead lw 2 front
set arrow 503 from 500, graph 0 length graph .01 angle 75 nohead lw 2 front
set arrow 504 from 500, graph 0 length graph .01 angle 75 nohead lw 2 front
plot 'silver.dat' with yerrorbars lw 2, '' with lines
#
Click here for minimal script to generate this plot
