input graph;
prologues := 3;
outputformat := "svg";
outputtemplate := "VIZ-06-004.svg";
color Blue, Teal, Orange, Wash, Missing;
Blue := (0, 84 / 255, 159 / 255);
Teal := (0, 177 / 255, 183 / 255);
Orange := (246 / 255, 168 / 255, 0);
Wash := (232 / 255, 241 / 255, 250 / 255);
Missing := (236 / 255, 236 / 255, 237 / 255);
vardef P(expr x, y) =
    (55 + 345 * (x - (0)) / (75), 45 + 175 * (y - (0)) / (300))
enddef;
def rect(expr x, y, xx, yy, col) =
    fill P(x, y)--P(xx, y)--P(xx, yy)--P(x, yy)--cycle withcolor col;
enddef;
beginfig(1);
    fill unitsquare xscaled 420 yscaled 280 withcolor white;
    label.llft("VIZ-06-004" infont "cmr8", (414, 272));
    label.rt(btex Known ages: n=2,205; 2 ages missing etex scaled .65, (55, 246));
    draw P(0, 300)--P(0, 0)--P(75, 0) withcolor .4white;
    label.bot(btex 0 etex scaled .7, P(0, 0));
    label.bot(btex 15 etex scaled .7, P(15, 0));
    label.bot(btex 30 etex scaled .7, P(30, 0));
    label.bot(btex 45 etex scaled .7, P(45, 0));
    label.bot(btex 60 etex scaled .7, P(60, 0));
    label.bot(btex 75 etex scaled .7, P(75, 0));
    label.lft(btex 0 etex scaled .7, P(0, 0));
    label.lft(btex 50 etex scaled .7, P(0, 50));
    label.lft(btex 100 etex scaled .7, P(0, 100));
    label.lft(btex 150 etex scaled .7, P(0, 150));
    label.lft(btex 200 etex scaled .7, P(0, 200));
    label.lft(btex 250 etex scaled .7, P(0, 250));
    label.lft(btex 300 etex scaled .7, P(0, 300));
    label(btex Age (years) etex scaled .8, (227.5, 13));
    label(btex People etex scaled .8 rotated 90, (13, 132));
% BEGIN EXAMPLE
    numeric n, v[][];
    n := 0;
    gdata("data/ages.tsv", c,
        n := n + 1;
        for j = 1 upto 10:
            v[n][j] := scantokens c[j];
        endfor
    );
    for k = 1 upto n:
        rect(v[k][2], 0, v[k][3], v[k][4], Blue);
    endfor
% END EXAMPLE
    setbounds currentpicture to unitsquare xscaled 420 yscaled 280;
endfig;
end.