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timeseries
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hjp 2003-03-03 11:54:09 +00:00
commit 05c38f1efa
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13
Makefile.PL Normal file
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use ExtUtils::MakeMaker;
# See lib/ExtUtils/MakeMaker.pm for details of how to influence
# the contents of the Makefile that is written.
WriteMakefile(
'NAME' => 'TimeSeries',
'VERSION_FROM' => 'TimeSeries.pm', # finds $VERSION
'PREREQ_PM' => {
'File::Temp' => 0,
'Time::Local' => 0,
'Data::Dumper' => 0,
},
'EXE_FILES' => [ ],
);

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TimeSeries.pm Normal file
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package TimeSeries;
use File::Temp qw(tempfile);
use Time::Local;
use Data::Dumper;
sub new {
my ($class, %opts) = @_;
my $self = {};
bless ($self, $class);
$self->{data} = [];
$self->{style} = "lines";
return $self;
}
sub add {
my ($self, $timestamp, @data) = @_;
push(@{$self->{data}}, [ $timestamp, [ @data ] ]);
#print Dumper($self);
}
sub legend {
my ($self, @legend) = @_;
my $oldlegend = $self->{legend};
$self->{legend} = [@legend] if (@legend);
return @$oldlegend;
}
sub style {
my ($self, $style) = @_;
my $oldstyle = $self->{style};
$self->{style} = $style if ($style);
return $oldstyle;
}
sub dstcorr {
my ($time) = @_;
($sec,$min,$hour,$mday,$mon,$year) = localtime($time);
my $toff = $hour * 3600 + $min * 60 * $sec;
if ($toff != 0) {
if ($toff > 12*3600) {
$toff -= 24 * 3600;
}
print STDERR "correcting time by $toff seconds ";
printf STDERR "from %04d-%02d-%02d %02d:%02d:%02d ", $year+1900, $mon+1, $mday, $hour, $min, $sec;
$time -= $toff;
($sec,$min,$hour,$mday,$mon,$year) = localtime($time);
printf STDERR "to %04d-%02d-%02d %02d:%02d:%02d\n", $year+1900, $mon+1, $mday, $hour, $min, $sec;
}
return $time;
}
sub plot {
my ($self) = @_;
#print Dumper($self);
my ($datafh, $datafn) = tempfile();
for my $i (@{$self->{data}}) {
my $time = $i->[0];
my $data = $i->[1];
print $datafh $time;
for my $j (@$data) {
print $datafh "\t", $j + 0;
}
print $datafh "\n";
}
close($datafh);
my ($ctlfh, $ctlfn) = tempfile();
my ($psfh, $psfn) = tempfile();
# generic settings
print $ctlfh "set term postscript color\n";
print $ctlfh "set output '$psfn'\n";
print $ctlfh "set data style $self->{style}\n";
print $ctlfh "set grid\n";
# compute ticks
my $firsttime = $self->{data}[0][0];
my $lasttime = $self->{data}[$#{$self->{data}}][0];
if ($lasttime - $firsttime > 3 * 30 * 24 * 3600) {
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($firsttime);
$sec = $min = $hour = 0;
$mday = 1;
$firsttime = timelocal($sec,$min,$hour,$mday,$mon,$year);
print $ctlfh "set xtics rotate (";
my $comma = 0;
my $time;
for (;;) {
$time = timelocal($sec,$min,$hour,$mday,$mon,$year);
if ($comma) {
print $ctlfh ", ";
} else {
$comma = 1;
}
printf $ctlfh qq|"%04d-%02d-%02d" %d|, $year+1900, $mon+1, $mday, $time;
if (++$mon >= 12) {
$mon = 0; $year++;
}
if ($time > $lasttime) {last}
}
$lasttime = $time;
print $ctlfh ")\n";
} elsif ($lasttime - $firsttime > 30 * 24 * 3600) {
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($firsttime);
$firsttime -= 86400 * $wday;
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($firsttime);
$sec = $min = $hour = 0;
my $time = $firsttime = timelocal($sec,$min,$hour,$mday,$mon,$year);
print $ctlfh "set xtics rotate (";
my $comma = 0;
for (;;) {
($sec,$min,$hour,$mday,$mon,$year) = localtime($time);
if ($comma) {
print $ctlfh ", ";
} else {
$comma = 1;
}
printf $ctlfh qq|"%04d-%02d-%02d" %d|, $year+1900, $mon+1, $mday, $time;
if ($time > $lasttime) {last}
$time += 7 * 24 * 3600;
$time = dstcorr($time);
}
$lasttime = $time;
print $ctlfh ")\n";
} elsif ($lasttime - $firsttime > 3 * 24 * 3600) {
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($firsttime);
$sec = $min = $hour = 0;
my $time = $firsttime = timelocal($sec,$min,$hour,$mday,$mon,$year);
print $ctlfh "set xtics rotate (";
my $comma = 0;
for (;;) {
($sec,$min,$hour,$mday,$mon,$year) = localtime($time);
if ($comma) {
print $ctlfh ", ";
} else {
$comma = 1;
}
printf $ctlfh qq|"%04d-%02d-%02d" %d|, $year+1900, $mon+1, $mday, $time;
if ($time > $lasttime) {last}
$time += 24 * 3600;
$time = dstcorr($time);
}
$lasttime = $time;
print $ctlfh ")\n";
} else {
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($firsttime);
$sec = $min = 0;
my $time = $firsttime = timelocal($sec,$min,$hour,$mday,$mon,$year);
print $ctlfh "set xtics rotate (";
my $comma = 0;
for (;;) {
($sec,$min,$hour,$mday,$mon,$year) = localtime($time);
if ($comma) {
print $ctlfh ", ";
} else {
$comma = 1;
}
printf $ctlfh qq|"%04d-%02d-%02d %02d:%02d" %d|, $year+1900, $mon+1, $mday, $hour, $min, $time;
if ($time > $lasttime) {last}
$time += 3600;
}
$lasttime = $time;
print $ctlfh ")\n";
}
# what to plot
print $ctlfh "plot ";
$comma = 0;
$col = 2;
for $i (@{$self->{legend}}) {
if ($comma) {
print $ctlfh ", ";
} else {
$comma = 1;
}
print $ctlfh "'$datafn' using 1:", $col++, " title '$i'";
}
print $ctlfh "\n";
close ($ctlfh);
my $rc = system("gnuplot", $ctlfn);
print STDERR "system returned $rc\n";
open(PNG, "gs -sDEVICE=ppmraw -r150 -dBATCH -sOutputFile=- -q - < $psfn |" .
"pnmscale 0.5 |" .
"pnmflip -cw |" .
"pnmcrop |" .
"ppmquant 256 |" .
"ppmtogif |");
my $png;
{ local $/ = undef; $png = <PNG>; }
close(PNG);
return $png;
}
1;