#!/usr/bin/perl -w
use strict;
use Chart::Gnuplot;
# Initiate the chart object
my $chart = Chart::Gnuplot->new(
output => 'chartFmt_4.png',
title => "Add grid lines",
grid => "on",
);
# Data sets
my $data = Chart::Gnuplot::DataSet->new(
func => "tanh(x)",
);
# Plot the graph
$chart->plot2d($data);