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lib/Gnuplot/Builder/Dataset.pm  view on Meta::CPAN

The second argument (C<$writer>) is a code-ref that you have to call to write inline data.

    $dataset->set_data(sub {
        my ($dataset, $writer) = @_;
        foreach my $x (1 .. 3) {
            my $y = $x * 10;
            $writer->("$x $y\n");
        }
    });

This allows for very large inline data streaming directly into the gnuplot process.

If you don't pass any data to C<$writer>, it means the C<$dataset> doesn't have inline data at all.

=back

=head2 $dataset = $dataset->write_data_to($writer)

Write the inline data using the C<$writer>.
This method is required by plotting methods of L<Gnuplot::Builder::Script>.

lib/Gnuplot/Builder/Process.pm  view on Meta::CPAN

The command and arguments to run a gnuplot process.

By default, it's C<("gnuplot", "--persist")>.

You can also set this variable by the environment variable
C<PERL_GNUPLOT_BUILDER_PROCESS_COMMAND>.


=head2 $ENCODING

If set, L<Gnuplot::Builder> encodes the script string in the specified encoding just before streaming into the gnuplot process.
You can specify any encoding names recognizable by L<Encode> module.

By default it's C<undef>, meaning it doesn't encode the script.

You can also set this variable by the environment variable
C<PERL_GNUPLOT_BUILDER_PROCESS_ENCODING>.

=head2 $MAX_PROCESSES

Maximum number of gnuplot processes that can run in parallel.