/usr/share/psychtoolbox-3/PsychProbability/NormalProb.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | function probs = NormalProb(center,width,u,var)
% probs = NormalProb(center,width,u,var)
%
% Compute the probability that a N(u,var) random variable lies between
% center-width/2 and center+width/2
% 7/24/04 awi Cosmetic
% 1/29/05 dgp Cosmetic
% Find low and high values of each bin
[m,n] = size(center);
widths = width*ones(m,n);
lows = center - widths/2;
highs = center + widths/2;
probs=abs(NormalCumulative(lows,u,var)-NormalCumulative(highs,u,var));
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