Gnuplot¶

Synopsis¶

This operator has no parameter, two inputs (the GNUplot script and the data) and one output (the plot). It launches GNUplot for generating a .PNG image.

Parameters¶

None.

Inputs¶

2 input files :

• the first is the GNUplot script. This script uses a @file@ string, that is dynamically replaced with the real name by the script.
• the second is the data to be plot.

Outputs¶

1 output: the .PNG image representing the plot.

Shell Code¶

#!/bin/bash

# this shell uses gnuplot with the script as first input on the data
# on the second output
# the @file@ string in the gnuplot script is replaced by the data file.

script=$1; shift
data=`echo $1 | sed 's/\//\\\\\//g'`; shift
output=$1; shift

(
    echo "set terminal png" 
    echo "set output '$output'" 
    sed "s/@file@/$data/g" $script
) > $script.plot

gnuplot $script.plot
rm $script.plot

Example¶

This operator is used plotting the results in the stream Data mining complexity.