input graph

input graph
defaultfont:="ptmr8r";
warningcheck:=0;
beginfig(1)
def sq(expr x,y,num,perc) =
gfill(x,y)--(x+10,y)--
(x+10,y+10)--(x,y+10)--cycle
withcolor (perc/100,perc/100,perc/100);
glabel(num,(x+5,y+5))
if perc < 50: withcolor white fi;
enddef;
defaultscale:=0.7;
draw begingraph(70mm,80mm);
setrange((20,10),(110,110));
autogrid(,);
gdata ("pot.dat",c,
sq((scantokens c1)*10,
(scantokens c2)*10,
c3, (scantokens c4)););
endgraph;

endfig;
end;