media

a=[2,5,4,6,89;23,54,34,68,25;1,2,3,4,5;34,25,45,76,98;32,43,12,43,12]';
h=zeros(255,1);
for i=1:5,
for j=1:5,
in=a(i,j);
h(in)=(h(in)+1);
end;
end;
plot(h);