/usr/share/psychtoolbox-3/Psychometric/ComputeLogistic.m is in psychtoolbox-3-common 3.0.9+svn2579.dfsg1-1.
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1 2 3 4 5 6 7 8 9 10 11 | function y = ComputeLogistic(x,a,b)
% y = ComputeLogistic(x,a,b)
%
% Compute a logistic equation.
% The form of the logistic equation is y = 1/(1+10^-(ax+b)).
%
% See also: FitLogistic, InvertLogistic, FitLogitYN.
%
% 2/15/95 dhb Wrote it.
y = 1 ./ (1 + (10.0 .^ (-1*(a*x+b))));
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