How can I create this Cumulative Normal (Gaussian) Psychometric Function?
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I am trying to create a function for the above, but this gives me errors.
function [a] = cumGaussPF(x,beta,alpha)
fx = @(x,beta,alpha) exp(-0.5*((x-alpha)/beta).^2);
pf = 1/(beta*sqrt(2*pi))*integral(@(x) fx(x,beta,alpha),-inf,x);
end
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Torsten
2022-2-21
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pf = normcdf(x,alpha,beta)
3 个评论
Hossana Twinomurinzi
2022-2-21
Torsten
2022-2-21
normcdf is a function from the Statistics and Machine Learning Toolbox.
If your code should not depend on a licence for this toolbox, you can also use
pf = 0.5*(1 + erf((x-alpha)/(sqrt(2)*beta)))
Hossana Twinomurinzi
2022-2-21
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