NAME

Gnuplot::Simple - A simple way to control Gnuplot

SYNOPSIS

Gnuplot can be controlled from Perl using a pipe. This modules faciliates the process to allow more convenient graph plotting from perl E.g.

  use GnuPlot::Simple qw(write_data);

  write_data("file.txt", [[ 1,2 ],[ 2,3 ]] );

For obvious reasons, gnuplot needs to be installed for this module to work.

FUNCTION/ATTRIBUTES

write_data($filename, @datasets)

Write the $dataset to the file $filename to create a gnuplot data file. Each element in $datasets should be of the form [[<c1>...<cn>],...]

The column values must not contain newline or quote marks. They can be Unicode.

fun exec_commands (Str $c, $data)

Example usage:

    my $d = [ [ 1,2 ],[ 2,3 ] ];
    exec_commands(
        qq{
        set terminal png
        set output "$f"
        plot __DATA__ u 1:2 
        }, @d
    );

The function takes a string of gnuplot commands $c that is piped to gnuplot. You can give a data set as well in $data. Then, any occurences of __DATA__ in $c are replaced by a temp file containing $data transformed to gnuplot format as done by write_data.

LICENSE

This software is licensed under the same terms as Perl itself.