sub histogram from histogram

i have a = [1,1,1;1,2,3;2,1,4;1,1,3;2,1,2;1,3,2] and i form histogram of matrix "a" by hist(a)

now I want to make histogram of all the columns of matrix"a" separately. how this is performed and what if i have 100x100 matrix then how will this be achieved.

Answer 1

[Bjorn Gustavsson]

Perhaps something like:

for i1 = 1:size(a,2)
  [H1{i1},H2{i1}] = hist(a(:,i1));
end

stairs(H2{2},H1{2})
hold on
stairs(H2{1},H1{1},'g')  
stairs(H2{3},H1{3},'r')

You should presumably look into using a second argument to hist but that you'd decide better than I guess...

HTH

[Manish Sharma]

thanks for prompt reply i will try this and will post if any issue arises.

[Muhammad Usman Saleem]

please post in the form of image you got in output