hi
in the following code i am trying to plot the sine function slowly , i am using $mw->update; and a delay loop, we can change how much slow by changing the $counter variable
i wish other ways to slow the plotting.
i hope there is other ways to get rid of the $mw->update; 
use warnings;
use strict;        
use Tk;
my $mw = MainWindow->new;  
my $x = 0; my $y = 0;
my $pi = 3.1415926;
my $counter=0; 
my $c = $mw->Canvas(-width => 500, -height => 500); 
$c ->pack;
# draw axis
$c -> createLine(50, 250, 450, 250); 
$c -> createText(10, 250, -fill => 'blue', -text => 'X'); 
$c -> createLine(250, 50, 250, 450); 
$c -> createText(250, 10, -fill => 'blue', -text => 'Y'); 
for ( $x = -(3*$pi); $x <= +(3*$pi); $x += 0.05) {
 $y = sin($x);
$c -> createText( $x*30+250, $y*30+250, -fill => 'red', -text => '.');
    $counter=0;
    # delay loop
     while ($counter <= 100000) {
            $counter++;
        }
        $mw->update;
    }
        MainLoop;

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In reply to plotting slowly by orange

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