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timeseries
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Added logarithmic scaling 

Added output type
This commit is contained in:
hjp 2003-04-24 14:03:32 +00:00
parent 05c38f1efa
commit c9ebeaf37e
2 changed files with 124 additions and 10 deletions
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57
TimeSeries.pm
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@ -12,6 +12,7 @@ sub new {
$self->{data} = [];
$self->{style} = "lines";
$self->{output_format} = "png";
return $self;
}
@ -39,6 +40,27 @@ sub style {
return $oldstyle;
}
sub log_x {
my ($self, $log_x) = @_;
my $oldlog_x = $self->{log_x};
$self->{log_x} = $log_x if ($log_x);
return $oldlog_x;
}
sub log_y {
my ($self, $log_y) = @_;
my $oldlog_y = $self->{log_y};
$self->{log_y} = $log_y if ($log_y);
return $oldlog_y;
}
sub output_format {
my ($self, $output_format) = @_;
my $oldoutput_format = $self->{output_format};
$self->{output_format} = $output_format if ($output_format);
return $oldoutput_format;
}
sub dstcorr {
@ -86,6 +108,8 @@ sub plot {
print $ctlfh "set output '$psfn'\n";
print $ctlfh "set data style $self->{style}\n";
print $ctlfh "set grid\n";
print $ctlfh "set log x\n" if ($self->{log_x});
print $ctlfh "set log y\n" if ($self->{log_y});
# compute ticks
@ -203,19 +227,36 @@ sub plot {
my $rc = system("gnuplot", $ctlfn);
print STDERR "system returned $rc\n";
#print STDERR "system returned $rc\n";
open(PNG, "gs -sDEVICE=ppmraw -r150 -dBATCH -sOutputFile=- -q - < $psfn |" .
my $pipe;
if ($self->{output_format} eq "ps") {
$pipe = "< $psfn";
} else {
$pipe =
"gs -sDEVICE=ppmraw -r150 -dBATCH -sOutputFile=- -q - < $psfn |" .
"pnmscale 0.5 |" .
"pnmflip -cw |" .
"pnmcrop |" .
"ppmquant 256 |" .
"ppmtogif |");
"pnmcrop 2> /dev/null |";
}
my $png;
{ local $/ = undef; $png = <PNG>; }
if ($self->{output_format} eq "png") {
$pipe .= "pnmtopng |";
}
if ($self->{output_format} eq "gif") {
$pipe .= "ppmquant 256 2> /dev/null |" .
"ppmtogif |";
}
if ($self->{output_format} eq "jpeg") {
$pipe .= "cjpeg -sample 1x1,1x1,1x1 |";
}
open(PNG, $pipe);
my $graph;
{ local $/ = undef; $graph = <PNG>; }
close(PNG);
return $png;
return $graph;
}
1;

73
t/0basic.t Normal file
View File

@ -0,0 +1,73 @@
# Before `make install' is performed this script should be runnable with
# `make test'. After `make install' it should work as `perl test.pl'
######################### We start with some black magic to print on failure.
# Change 1..1 below to 1..last_test_to_print .
# (It may become useful if the test is moved to ./t subdirectory.)
BEGIN { $| = 1; print "1..6\n"; }
END {print "not ok 1\n" unless $loaded;}
use TimeSeries;
$loaded = 1;
print "ok 1\n";
######################### End of black magic.
# Insert your test code below (better if it prints "ok 13"
# (correspondingly "not ok 13") depending on the success of chunk 13
# of the test code):
my $test;
$test = 2;
my $ts = TimeSeries->new();
if (defined($ts)) {
print "ok $test\n";
} else {
print "not ok $test\n";
}
$ts->legend("value");
$ts->add(1.000E9, 5);
$ts->add(1.001E9, 9);
$ts->add(1.002E9, 3);
$test = 3;
my $g = $ts->plot();
print STDERR "length \$g = ", length($g), "\n";
if (length($g) > 0 && substr($g, 0, 3) eq "PNG") {
print "ok $test\n";
} else {
print "not ok $test\n";
}
$test = 4;
$ts->output_format("gif");
my $g = $ts->plot();
print STDERR "length \$g = ", length($g), "\n";
if (length($g) > 0 && substr($g, 0, 6) eq "GIF87a") {
print "ok $test\n";
} else {
print "not ok $test\n";
}
$test = 5;
$ts->output_format("jpeg");
my $g = $ts->plot();
print STDERR "length \$g = ", length($g), "\n";
if (length($g) > 0 && substr($g, 0, 10) eq "\377\330\377\340\000\020JFIF") {
print "ok $test\n";
} else {
print "not ok $test\n";
}
$test = 6;
$ts->output_format("ps");
my $g = $ts->plot();
print STDERR "length \$g = ", length($g), "\n";
if (length($g) > 0 && substr($g, 0, 2) eq "%!") {
print "ok $test\n";
} else {
print "not ok $test\n";
}