17 lines
322 B
Matlab
17 lines
322 B
Matlab
function d = dbeta(x,a,b)
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%DBETA The beta density function
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%
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% f = dbeta(x,a,b)
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% Anders Holtsberg, 18-11-93
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% Copyright (c) Anders Holtsberg
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if any(any((a<=0)|(b<=0)))
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error('Parameter a or b is nonpositive')
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end
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I = find((x<0)|(x>1));
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d = x.^(a-1) .* (1-x).^(b-1) ./ beta(a,b);
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d(I) = 0*I;
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