Generate Weighted Histogram

histwc is a simple utility to construct weighted histogram.

histwc is a utility to construct weighted histogram. Given
number of bins, values and corresponding weights, there are
two functions produces identical outputs: a vector of histogram
frequencies and intervals. Functions generate a vector of
cumulative weights for data histogram. Equal number of bins
will be considered using minimum and maximum values of the data.
Weights will be summed in the given bin. These two vectors can
be used to plot the weighted histogram. One of the function is
vectorized, but not necessarily faster.

Example:
%vv = [1.0 1.0 2.0 5.0 3.0 4.0 1.0 5.0 3.0 1.0]; % values
%ww = [0.1 0.1 0.05 0.05 0.2 0.05 0.05 0.1 0.1 0.2]; % weights
%nbins = 5;
%[histw, intervals] = histwc(vv, ww, nbins);
% Example Visualise:
% bar(intervals, histw)