Normalized histogram

Same as histogram, but the area sum is 1.

HISTNORM Histogram normalized
[...] = HISTNORM(...) works like HIST, but the frequency is normalized so that area sum is 1.

Bonus usage!
[...] = HISTNORM(..., 'plot') plots and returns the output arguments. Be sure 'plot' is the last argument.

Example:
data = randn(1)+randn(1)*randn (10000, 1);
[xo,no] = histnorm(data, 101, 'plot');
hold on
plot (no, normpdf(no, mean(data), std(data)), 'r');
hold off

See also: HIST.

Copyright 2009 DWTFYW.