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File:Metrication by year map.svg

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Original file(SVG file, nominally 2,560 × 1,314 pixels, file size: 1.06 MB)
Warning This map should always be accompanied by suitable text for the benefit of readers who suffer from red-green colour-blindness. Suitable text can be found in the PERL code below

Summary[edit]

Description
English: World Map, colour-coded to show the years the countries started of the process of official conversion to the metric system. Using data from PhD thesis by Hector Vera [1] and NIST [2]; Red is preliminary 1795, and green is 1998, following script has been used to generate the CSS:
  1. Vera, Hector (2011-09) The Social Life of Measures: Metrication in the United States and Mexico, 1789-2004(PhD dissertation)[1], Sociology and Historical Studies, New School for Social Research, pages 51, 494-497
  2. () The International Bureau of Weights and Measures 1875 - 1975: NBS Special Publication 420, Washington, D.C.: National Bureau of Standards, p. 244
Date (UTC)
Source
Author
SVG development
BlueOnionCut.png
This W3C-unspecified map was created with perl.

Perl

#!/usr/bin/perl -w


use v5.12;
use Data::Dumper;
use strict;
use warnings;

use Graphics::ColorObject;
use Math::Trig;
use SVG::Parser;
use CSS;

use constant DATE_MIN => 1795;
use constant DATE_MAX => 1998;
use constant HUE_START => -60;
use constant HUE_LENGTH => 240;
use constant SATURATION => 0.7;
use constant LIGHTNESS => 0.6;
use constant LEGEND_XLABEL_SIZE => 60;
use constant LEGEND_XPOS => 0;
use constant LEGEND_YPOS => 1250;
use constant LEGEND_XOFF => 100;
use constant LEGEND_YOFF => 50;
use constant LEGEND_WIDTH => 2752.766;
use constant LEGEND_HEIGHT => 250;

my $dates = {
        '1795' => [ 'fr' ],
        '1816' => [ 'nl', 'be', 'lu' ],
        '1840' => [ 'sn', 'dz' ],
        '1849' => [ 'es' ],
        '1852' => [ 'pt' ],
        '1853' => [ 'co', 'mc' ],
        '1857' => [ 'mx', 've' ],
        '1858' => [ 'cu' ],
        '1861' => [ 'it' ],
        '1862' => [ 'pe', 'uy', 'br' ],
        '1864' => [ 'ro' ],                 
        '1865' => [ 'ec', 'cl' ],
        '1867' => [ 'do' ],
        '1868' => [ 'de' , 'bo' ],
        '1869' => [ 'tr' ],
        '1871' => [ 'sr', 'at', 'cz', 'sk', 'hr', 'li', 'si', 'me' ],  
        '1873' => [ 'rs' ],    
        '1874' => [ 'hu', 'se' ],
        '1875' => [ 'ch' ],
        '1876' => [ 'mu' ],
        '1877' => [ 'ar' ],
        '1878' => [ 'ba', 'sc' ],
        '1881' => [ 'cr' ],
        '1882' => [ 'no' ],
        '1884' => [ 'cg', 'ci', 'bj', 'mr', 'ne', 'td' ],
        '1885' => [ 'sv' ],
        '1886' => [ 'fi' ],
        '1888' => [ 'bg', 'mk' ],
        '1891' => [ 'st' ],
        '1893' => [ 'tn', 'ni' ],
        '1895' => [ 'hn' ],
        '1898' => [ 'dj' ],
        '1899' => [ 'py', 'pr' ],
        '1900' => [ 'gq', 'is' ],
        '1901' => [ 'gn' ],   
        '1905' => [ 'mz', 'ao' , 'gw', 'cv' ],  
        '1906' => [ 'ph' ],
        '1907' => [ 'dk', 'sm' ],
        '1910' => [ 'gt', 'mt', 'bz', 'bi', 'rw', 'cd' ],  
        '1911' => [ 'vn' ],
        '1912' => [ 'th' ],
        '1913' => [ 'cn' ],    
        '1914' => [ 'km' ],
        '1915' => [ 'pa' ], 
        '1916' => [ 'mn' ],    
        '1918' => [ 'ru' ],
        '1919' => [ 'pl' ],
        '1920' => [ 'ht' ],
        '1922' => [ 'kh', 'ma', 'eh', 'kz', 'kg', 'tj', 'tm', 'uz', 'am', 'az', 'by', 'ee', 'ge', 'lv', 'lt', 'md', 'ua' ],
        '1923' => [ 'ly', 'id', 'af' ],
        '1924' => [ 'tg' ],
        '1927' => [ 'ir' ],
        '1930' => [ 'iq' ],
        '1934' => [ 'sy', 'ad', 'lb' ],
        '1947' => [ 'il' ],
        '1948' => [ 'kp', 'al' ],
        '1949' => [ 'kr' ], 
        '1951' => [ 'eg', 'bt', 'jp' ],
        '1952' => [ 'jo', 'tw' ], 
        '1954' => [ 'sd', 'ss', 'in' ],         # SS was part of SD
        '1957' => [ 'gr', 'mo', 'tl', 'mg' ],
        '1959' => [ 'mv' ],        
        '1960' => [ 'so', 'ga', 'bf', 'ml', 'cf' ],        
        '1961' => [ 'kw', 'cm', 'ae' ],
        '1962' => [ 'et', 'er', 'ng' ],
        '1963' => [ 'np', 'la' ],  
        '1964' => [ 'sa' ],
        '1965' => [ 'gb' ],
        '1967' => [ 'na', 'ie', 'za', 'ke', 'ug', 'tz',  'pk' ],  
        '1968' => [ 'sg'], 
        '1969' => [ 'au', 'nz', 'bs', 'zw', 'bw', 'sz', 'bh', 'gd', 'dm', 'vc', 'kn' ],
        '1970' => [ 'ca', 'lk', 'tt', 'zm', 'ls', 'pg', 'sb', 'bm' ],  # BM ex NIST list
        '1971' => [ 'gy', 'my'], 
        '1972' => [ 'gh', 'cy', 'fj', 'qa' ],
        '1973' => [ 'bb', 'jm', 'nr' ],
        '1974' => [ 'om', 'ag' ], 
        '1975' => [ 'to' ],
        '1976' => [ 'sl', 'mw', 'gm'], 
        '1978' => [ 'tv' ],
        '1981' => [ 'ye' ],
        '1982' => [ 'bd' ],
        '1984' => [ 'ki' ],
        '1985' => [ 'bn' ],
        '1988' => [ 'vu' ],
        '2000' => [ 'lc' ]
};
my $css = new CSS( { 'parser' => 'CSS::Parse::Lite', 'adaptor' => 'CSS::Adaptor::Pretty' } ); 

my $svg=SVG::Parser->new()->parsefile($ARGV[0]);
my $css_container = $svg->getElementbyID('style_css_sheet');
my $css_data = $css_container->{-cdata};
$css_data =~ s!/\*.*?\*\/!!gs;
$css->read_string( $css_data );
my $hue_start = deg2rad(HUE_START);
my $hue_length = deg2rad(HUE_LENGTH, 1);
foreach my $date( sort keys %$dates ) {
	my $hue = $hue_start + (1-(DATE_MAX - $date)/(DATE_MAX - DATE_MIN)) * $hue_length;
	$css->read_string( sprintf 
		"%s {\n\tfill: #%s;\n}\n",
		join (', ', map { ".$_" } @{$dates->{$date{{),
		Graphics::ColorObject->new_HSL([rad2deg($hue), SATURATION, LIGHTNESS])->as_RGBhex()
	);
}
$css->read_string( ".us, .mm, .lr { fill: #333333 } " );

# say($css->output());
$css->get_style_by_selector( '.landxx' )->get_property_by_name( 'stroke' )->{values} = [new CSS::Value({value => 'black'})];
$css->get_style_by_selector( '.landxx' )->get_property_by_name( 'fill' )->{values} = [new CSS::Value({value => '#FFFFD0'})];
# $css->get_style_by_selector( '.lake' )->get_property_by_name( 'stroke' )->{values} = [new CSS::Value({value => '#1821DE'})];
$css->get_style_by_selector( '.oceanxx' )->get_property_by_name( 'fill' )->{values} = [new CSS::Value({value => '#9ec7f3'})];
my $coastxx = $css->get_style_by_selector( '.coastxx' );
$coastxx->add_property( new CSS::Property( { property => 'stroke', value => '#1821DE' } ) );
$coastxx->add_property( new CSS::Property( { property => 'stroke-opacity', value => '1.0' } ) );
$coastxx->add_property( new CSS::Property( { property => 'stroke-width', value => '0.5' } ) );
my $legend = $svg->group( 
	id => 'legend',
	transform => 'translate('.LEGEND_XPOS.','.LEGEND_YPOS.')'
);
my $gradient = $legend->gradient(
	-type => "linear",
	id    => "legend_gradient"
);
my $legend_box = $legend->rectangle(
	x     => 0, y      => 0,
	width => LEGEND_WIDTH, height => LEGEND_HEIGHT,
	rx    => 10, ry     => 10,
	id    => 'legend_box'
);

my $gradbox = $legend->rectangle(
	x     => LEGEND_XOFF, y      => LEGEND_YOFF,
	width => LEGEND_WIDTH - LEGEND_XOFF * 2, height => 100,
	id    => 'legend_grad'
);

{
	my $span = scalar keys %$dates;
	my $counter = 0;
	foreach my $date( sort keys %$dates ) {
		my $hue = $hue_start + (1-(DATE_MAX - $date)/(DATE_MAX - DATE_MIN)) * $hue_length;
		$gradient->stop(
			offset => sprintf( "%d%%", $counter / $span * 100 ),
			'stop-color' => '#'.Graphics::ColorObject->new_HSL([rad2deg($hue), SATURATION, LIGHTNESS])->as_RGBhex(),
		);
		++$counter;
	}
	my $datespan = DATE_MAX - DATE_MIN;
	foreach my $id(0..10) {
		my $xpos = LEGEND_XOFF + $id / 10 * (LEGEND_WIDTH - LEGEND_XOFF * 2);
		$legend->line(
			x1 => $xpos - 2,
			x2 => $xpos - 2,
			y1 => LEGEND_YOFF,
			y2 => 170,
			'stroke-width' => '4',
		);
		$legend->text( 
			x =>  $xpos - LEGEND_XLABEL_SIZE,
			y => 220,
			fill => 'black',
			'font-family' => 'sans-serif',
			'fill-opacity' => 1,
			'font-size' => LEGEND_XLABEL_SIZE,
			'stroke' => 'none',
		)->cdata(DATE_MIN + int($id/10 * $datespan) );
	}
}


$css->read_string( "#legend { fill: blue; fill-opacity: .3; stroke: black; stroke-width: 10; } " );
$css->read_string( "#legend_grad { fill: url(#legend_gradient); fill-opacity: 1; stroke: black; stroke-width: 1; } " );

$css_container->CDATA( "\n".$css->output() );

print $svg->xmlify();
Translate   This SVG map uses embedded text.
I, the copyright holder of this work, hereby publish it under the following license:
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:45, 19 June 2018Thumbnail for version as of 14:45, 19 June 20182,560 × 1,314 (1.06 MB)AzaTothHue moved 60° down and increased length to 240° from 120°; other changes applied since before.
09:40, 31 July 2012Thumbnail for version as of 09:40, 31 July 2012940 × 477 (1.54 MB)HtonlAlter CSS to apply same colour to Namibia as South Africa - Namibia (SWA) was at the time part of South Africa and the South African metrication law applied.
02:21, 23 March 2009Thumbnail for version as of 02:21, 23 March 2009940 × 477 (1.54 MB)AzaTothcorrectify the gradient
02:13, 23 March 2009Thumbnail for version as of 02:13, 23 March 2009940 × 477 (1.54 MB)AzaTothdon't want to have ugly gray there :/
02:11, 23 March 2009Thumbnail for version as of 02:11, 23 March 2009940 × 477 (1.54 MB)AzaTothforgot to readd the ocean color
02:07, 23 March 2009Thumbnail for version as of 02:07, 23 March 2009940 × 477 (1.54 MB)AzaTothupdated with legend
23:37, 18 March 2009Thumbnail for version as of 23:37, 18 March 2009940 × 477 (1.53 MB)AzaToth{{Information |Description=World Map showing Metrication, colour-coded by year of conversion. Using data from USMA (U.S. Metric Association); Red is preliminary 1795, and green is 1998, following script has been used to generate the CSS: <script language=
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