31. reread
The reread command causes the current gnuplot command file, as specified
by a load command or on the command line, to be reset to its starting
point before further commands are read from it. This essentially implements
an endless loop of the commands from the beginning of the command file to
the reread command. (But this is not necessarily a disaster---reread can
be very useful when used in conjunction with if. See if for details.)
The reread command has no effect if input from standard input.
Examples:
Suppose the file "looper" contains the commands
| | a=a+1
plot sin(x*a)
pause -1
if(a<5) reread
|
and from within gnuplot you submit the commands
The result will be four plots (separated by the pause message).
Suppose the file "data" contains six columns of numbers with a total yrange
from 0 to 10; the first is x and the next are five different functions of x.
Suppose also that the file "plotter" contains the commands
| | c_p = c_p+1
plot "$0" using 1:c_p with lines linetype c_p
if(c_p < n_p) reread
|
and from within gnuplot you submit the commands
| | n_p=6
c_p=1
set nokey
set yrange [0:10]
set multiplot
call 'plotter' 'data'
set nomultiplot
|
The result is a single graph consisting of five plots. The yrange must be
set explicitly to guarantee that the five separate graphs (drawn on top of
each other in multiplot mode) will have exactly the same axes. The linetype
must be specified; otherwise all the plots would be drawn with the same type.
This document was generated
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