The replot command without arguments repeats the last plot or splot
command. This can be useful for viewing a plot with different set options,
or when generating the same plot for several devices.
Arguments specified after a replot command will be added onto the last
plot or splot command (with an implied ',' separator) before it is
repeated. replot accepts the same arguments as the plot and splot
commands except that ranges cannot be specified. Thus you can use replot
to plot a function against the second axes if the previous command was plot
but not if it was splot, and similarly you can use replot to add a plot
from a binary file only if the previous command was splot.
N.B.---use of
plot '-' ; ... ; replot
is not recommended. gnuplot does not store the inline data internally, so
since replot appends new information to the previous plot and then
executes the modified command, the '-' from the initial plot will expect
to read inline data again.
Note that replot does not work in multiplot mode, since it reproduces
only the last plot rather than the entire screen.
See also command-line-editing for ways to edit the last plot (splot)
command.