timeseries/sensorstemmpplot

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#!/usr/bin/perl -w
=head1 NAME
sensorstempplot - plot temperatures from (lm_)sensors output
=head1 DESCRIPTION
This program expects output from lm_sensors where each line is prepended
with a timestamp, like this:
2006-07-22T15:52:01 adm1023-i2c-0-18
2006-07-22T15:52:01 Adapter: SMBus I801 adapter at 1100
2006-07-22T15:52:01 Board: +33°C (low = -55°C, high = +127°C)
2006-07-22T15:52:01 CPU: +35°C (low = -55°C, high = +127°C)
2006-07-22T15:52:01
2006-07-22T15:52:01 max1617-i2c-0-1a
2006-07-22T15:52:01 Adapter: SMBus I801 adapter at 1100
2006-07-22T15:52:01 Board: +37°C (low = -55°C, high = +127°C)
2006-07-22T15:52:01 CPU: +40°C (low = -55°C, high = +127°C)
2006-07-22T15:52:01
Note that there are two lines for "Board" and "CPU" temperature with
different values. We distinguish them by noting the section identifier
and prepending it to the series names.
=cut
use strict;
use TimeSeries;
use utf8;
binmode STDOUT, ':raw';
my %series;
my $ns;
my %data;
my $ts = TimeSeries->new();
my $section = "";
while (<>) {
chomp;
if (/^[-0-9T:]* ([\w-]+)$/) {
$section = $1;
next;
}
if (/^([-0-9T:]*) ([\w-]+):\s+([+-]?[0-9.]*)°C /) {
my ($timestamp, $series, $value) = ($1, "$section $2", $3);
$series{$series} = ++$ns unless ($series{$series});
$data{$timestamp}{$series} = $value;
next;
}
}
my @series = sort { $series{$a} <=> $series{$b} } keys %series;
$ts->legend(@series);
$ts->legend_position("below");
$ts->stacked(0);
$ts->output_format('ps');
for my $timestamp (sort keys %data) {
my %d = %{$data{$timestamp}};
my @values = @d{@series};
$ts->add_timestring($timestamp, @values);
}
my $g = $ts->plot();
print $g