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(gnuplot.info)call

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Enter node , (file) or (file)node

 The `call` command is identical to the load command with one exception: you
 can have up to ten additional parameters to the command (delimited according
 to the standard parser rules) which can be substituted into the lines read
 from the file.  As each line is read from the `call`ed input file, it is
 scanned for the sequence `$` (dollar-sign) followed by a digit (0--9).  If
 found, the sequence is replaced by the corresponding parameter from the
 `call` command line.  If the parameter was specified as a string in the
 `call` line, it is substituted without its enclosing quotes.  `$` followed by
 any character other than a digit will be that character.  E.g. use `$$` to
 get a single `$`.  Providing more than ten parameters on the `call` command
 line will cause an error.  A parameter that was not provided substitutes as
 nothing.  Files being `call`ed may themselves contain `call` or `load`
 (Note: load ) commands.

 The `call` command _must_ be the last command on a multi-command line.

 Syntax:
       call "<input-file>" <parameter-0> <parm-1> ... <parm-9>

 The name of the input file must be enclosed in quotes, and it is recommended
 that parameters are similarly enclosed in quotes (future versions of gnuplot
 may treat quoted and unquoted arguments differently).

 Example:

 If the file 'calltest.gp' contains the line:
       print "p0=$0 p1=$1 p2=$2 p3=$3 p4=$4 p5=$5 p6=$6 p7=x$7x"

 entering the command:
       call 'calltest.gp' "abcd" 1.2 + "'quoted'" -- "$2"

 will display:
       p0=abcd p1=1.2 p2=+ p3='quoted' p4=- p5=- p6=$2 p7=xx

 NOTE: there is a clash in syntax with the datafile `using` (Note: using )
 callback operator.  Use `$$n` or `column(n)` to access column n from a
 datafile inside a `call`ed datafile plot.