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#!/usr/local/bin/perl
# -*- perl -*-
use Chart::Strip;
my $img = Chart::Strip->new
(
width => 160,
height => 64,
draw_tic_labels => 0,
draw_grid => 0,
);
my( $data );
for(my $t=0; $t<200; $t++){
my $v = sin( $t/40 ) ;
my $z = abs( sin( $t/8 )) / 2;
push @$data, {
time => $^T + $t * 5000,
value => $v,
min => $v - $z,
max => $v + $z,
};
}
$img->add_data( $data, {style => 'range', color => '00FF00'} );
$img->add_data( $data, {style => 'line', color => '0000FF'} );
$data = [];
for(my $t=10; $t<210; $t++){
my $v = ($t % 20) ? .25 : 1;
push @$data, {
time => $^T + $t * 5000,
value => $v + $t / 100 - 1.5,
};
}
$img->add_data( $data, {color => 'FF0000'} );
print $img->png();
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