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Re: Plot a spiral with gnuplot

by RichardK (Vicar)
on Aug 16, 2011 at 11:51 UTC ( #920467=note: print w/ replies, xml ) Need Help??

in reply to Plot a spiral with gnuplot

When I use gnuplot I use its special file handle '-' and inline the data.

Would it be better to use a tempfile? and if so what are the advantages?

I'd write your code like this :-

use v5.12; use warnings; use autodie; use IO::Handle; open my $out,'|-','gnuplot'; say $out 'unset key'; say $out "plot '-' with lines lw 3"; for my $t (100..500) { say $out $t*sin($t*0.1),' ',$t*cos($t*0.1); } say $out 'e'; flush $out; <STDIN>; close $out;

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Re^2: Plot a spiral with gnuplot
by ambrus (Abbot) on Aug 16, 2011 at 17:44 UTC

    Frankly, I didn't know you could give gnuplot data inline like that. The manual of gnuplot is a bit long and boring, so I've read only a little of it. Thank you for telling about this.

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