#!/usr/bin/env perl
-use 5.014;
+use 5.018;
use warnings;
use utf8;
use List::Util qw( min max sum );
use open qw( :std :utf8 );
+use experimental qw( lexical_subs );
our $VERSION = '1.02';
require Pod::Usage;
Pod::Usage::pod2usage(-exitval => 0, -perldocopt => '-oman', @_);
}
-GetOptions(\my %opt,
+my %opt;
+GetOptions(\%opt,
'color|c!',
'follow|f:i',
- 'trim|length|l=i',
+ 'trim|length|l=s' => sub {
+ my ($optname, $optval) = @_;
+ $optval =~ s/%$// and $opt{trimpct}++;
+ $optval =~ m/^-?[0-9]+$/ or die(
+ "Value \"$optval\" invalid for option $optname",
+ " (number or percentage expected)\n"
+ );
+ $opt{trim} = $optval;
+ },
'markers|m=s',
'unmodified|u!',
'width|w=i',
$opt{width} ||= $ENV{COLUMNS} || 80;
$opt{color} //= -t *STDOUT; # enable on tty
+$opt{trim} *= $opt{width} / 100 if $opt{trimpct};
if (defined $opt{follow}) {
$opt{follow} ||= 1;
Interval to output partial progress.
-=item -l, --length=[-]<size>
+=item -l, --length=[-]<size>[%]
Trim line contents (between number and bars)
to a maximum number of characters.
echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
psql -t | graph -u
+Exchange rate USD/EUR history from CSV download provided by ECB:
+
+ curl https://sdw.ecb.europa.eu/export.do \
+ -Gd 'node=SEARCHRESULTS&q=EXR.D.USD.EUR.SP00.A&exportType=csv' |
+ awk -F, '{RS="\r\n"} /^[12]/{print $2,$1}' | graph
+
+Total population history from the World Bank dataset (XML):
+
+ curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL |
+ xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - |
+ awk -F'<[^>]+>' 'BEGIN {RS="</wb:value>"} {print $4,$2}' | graph
+
+Movies per year from prepared JSON data:
+
+ curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json |
+ jq '.[].year' | uniq -c | graph
+
+Pokémon height comparison:
+
+ curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json |
+ jq -r '.pokemon[] | [.height,.num,.name] | join(" ")' | graph
+
Git statistics, such commit count by year:
git log --pretty=%ci | cut -b-4 | uniq -c | graph