Koders Code Search: dt.m

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dt.m
Language: Matlab
LOC: 5

Project Info
MatLinks/Chorus(matlinks)
Server: SourceForge
Type: cvs

$SourceForge\m\matlinks\matlinks\toolchest\copyleft\gpl\stixbox\$ ...chest\copyleft\gpl\stixbox\

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function f = dt(x,df)
%DT       The student t density function
%
%         f = dt(x,DegreesOfFreedom)

%       Anders Holtsberg, 18-11-93
%       Copyright (c) Anders Holtsberg

if any(any(df<=0))
   error('DegreesOfFreedom is wrong')
end

f = gamma((df+1)/2)./sqrt(df*pi)./gamma(df/2).*(1+x.^2./df).^(-(df+1)/2);