#!/usr/bin/env perl
use 5.014;
use warnings;
-use List::Util qw( max sum );
+use utf8;
+use List::Util qw( min max sum );
use open qw( :std :utf8 );
-our $VERSION = '1.00';
+our $VERSION = '1.01';
use Getopt::Long '2.33', qw( :config gnu_getopt );
sub podexit { require Pod::Usage; Pod::Usage::pod2usage(-exitval => 0, @_) }
GetOptions(\my %opt,
'color|c!',
+ 'trim|length|l=i',
'markers|m=s',
'width|w=i',
'usage|h' => sub { podexit() },
chomp for @lines;
my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
my @order = sort { $b <=> $a } grep { length } @values;
+if (defined $opt{trim}) {
+ my $trimpos = abs $opt{trim};
+ $trimpos <= 1 ? ($_ = substr($_, 0, 1)) :
+ (length > $trimpos and substr($_, $trimpos - 1) = '…') for @lines;
+}
+
my $maxval = $order[0];
my $minval = min $order[-1], 0;
-
my $lenval = max map { length } @order;
-my $len = 1 + max map { length } @lines; # left padding
+my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
+ 1 + max map { length } @lines; # left padding
my $size = ($maxval - $minval) &&
($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication
my @barmark;
-if ($opt{markers} // 1) {
+if ($opt{markers} // 1 and $size > 0) {
sub orderpos { (($order[$_[0]] + $order[$_[0] + .5]) / 2 - $minval) * $size }
$barmark[ (sum(@order) / @order - $minval) * $size ] = '='; # average
+ $barmark[ orderpos($#order * .31731) ] = '>';
+ $barmark[ orderpos($#order * .68269) ] = '<';
$barmark[ orderpos($#order / 2) ] = '+'; # mean
$barmark[ -$minval * $size ] = '|' if $minval < 0; # zero
defined and $opt{color} and $_ = "\e[36m$_\e[0m" for @barmark;
print "\e[0m" if $color;
}
printf '%-*s', $len, $lines[$nr];
- print $barmark[$_] // '-' for 1 .. (($val || 0) - $minval) * $size;
+ print $barmark[$_] // '-' for 1 .. $size && (($val || 0) - $minval) * $size;
say '';
}
Disable colored output of values and bar markers.
+=item -l, --length=[-]<size>
+
+Trim line contents (between number and bars)
+to a maximum number of characters.
+The exceeding part is replaced by an abbreviation sign,
+unless C<--length=0>.
+
+Prepend a dash (i.e. make negative) to enforce padding
+regardless of encountered contents.
+
=item -m, --markers=
Statistical positions to indicate on bars.
=item B<+>
-Median:
+Mean, median:
the middle value or average between middle values.
+=item B<<>
+
+Standard deviation left of the mean.
+Only 16% of all values are lower.
+
+=item B<< > >>
+
+Standard deviation right of the mean.
+The part between B<< <--> >> encompass all I<normal> results,
+or 68% of all entries.
+
=back
=item -w, --width=<columns>