How to re-bin histograms with wider bins?

Hi all,

How may I rebin an histogram in wider bins? Here an axample:

    0-1 4
    1-2 5
    2-3 1
    3-4 4
    4-5 5

the result may be:

0-2 9
2-4 5
4-6 5

Thanks

Regards

Pietro

Answer 1

[Image Analyst]

Simply use histc() - that's what it's meant for. Just pick the "edge" locations of your bins to be whatever you want them to be

edges = 0 : 2 : 6;
counts = histc(data, edges);

Answer 2

[Marius]

Hi Pietro,

That might get you startet on a solution.

 bins = [4 5 1 4 5 0];

bins must have even number of elements, if not you could pad an 0 at the end

 if mod(numel(bins),2)
   bins(end+1) = 0;
 end

 new_bins = bins(1:2:end) + bins(2:2:end);
            |                  |- 2)and add every second element starting with the second element
            |
            |- 1) take every second element starting with the first
new_bins is now [9 5 5]

Marius