Flag of Switzerland

According to the Wikipedia entry, to the Wikimedia svg example and to the CD Bund V7.0 the red colour of the flags is #FF0000, the width of the middle part of the cross is 1/5 of the full width, the width of the sides is 1/5 of the full width + 1/6 of the middle width. Which seems to be 0.2 + 0.2 / 6 = 1.4/6 of the full width.

The total width (or hight) of the cross = 2* 1.4/6+ 1/5 = 20 / 30 = 2/3 of the total width.

The both start at (total width - width of cross)/2 = 1/6 width.

examples/js/svg_flag_of_switzerland.js

function flag_of_switzerland() {
    var draw = SVG('flag_of_switzerland');
    var width = 150;
    draw.size(width, width);
    var red   = draw.rect(width, width).fill({ color: '#FF0000' });

    var horizontal = draw.rect(2*width/3, width/5).dx(width/6).dy(2*width/5);
    horizontal.fill({ color: '#FFFFFF' });
    var vertical = draw.rect(width/5, 2*width/3).dx(2*width/5).dy(width/6);
    vertical.fill({ color: '#FFFFFF' });
}

flag_of_switzerland();