Yes.
There are four major plotting packages in PDL, and each one can do what you
want.
David Mertens' PDL::Graphics::Prima is insanely zippy and is therefore pretty
awesome for rapid, interactive displays. It's designed for interactive
display, but can send output to a postscript device when you're finished doing
your calculation.
PDL::Graphics::PGPLOT and PDL::Graphics::PLPlot are the legacy plotters. Both
have means of doing what you want. PGPLOT produces not-as-pretty output but is
fast. PLPlot produces prettier output and is comparably fast for line plots,
but for images it is insanely slow (it'll remind you of being back in 1992).
PDL::Graphics::Gnuplot is optimized for hardcopy output and is therefore not as
fast as PGPLOT - but it can do interactive stuff and has a clean way to dump to
a file.
Since I like the look of the Gnuplot output, the way I do stuff like you're
describing is something like this:
use PDL::Graphics::Gnuplot;
$w=gpwin( wxt, size=>[8,8], enhanced=>1 );
for $i(1..1000) {
iterate_my_data();
$w->plot( <some commands> );
}
$w->output( pdf, out=>"my_nice_file.pdf",size=>[6,4,'in'] );
$w->replot;
$w->close;
On Oct 23, 2013, at 1:53 PM, mraptor <[email protected]> wrote:
> hi guys,
>
> Can I open a graph/image and plot the data on the screen as I'm
> calculating it... on the fly ?
> And when I'm done to save it to file ?
>
> thanks
>
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