MATLAB: Sum values of histogram bins

Question

Hi, I have data on particle intensities. I am binning the particles into bins based upon the intensities. This code is working.

histBins=[10, 25, 50, 75, 100, 150,  200];
a=hist(d,histBins);

I will now like to sum up the intensity of all the particles in each bin. Is there a way to do this?

Thanks, John

Answer 1

Building on The Cyclist's answer, use accumarray to do the summing:

x = randn(100,1);
edges = -10:10;
[~, idx] = histc(x,edges);
binsums = accumarray(idx,x)