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FreeMat
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Section: Random Number Generation
Generates a vector of non-central F-distributed random variables with the specified parameters. The general syntax for its use is
y = randnf(n,m,c)
where n is the number of degrees of freedom in the numerator, and m is the number of degrees of freedom in the denominator. The vector c determines the non-centrality shift of the numerator.
A non-central F-distributed random variable is the ratio of a non-central chi-square random variable and a central chi-square random variable, i.e.,
Here we use the randf to generate some non-central F-distributed random variables:
--> randnf(5*ones(1,9),7,1.34)
ans =
Columns 1 to 7
0.5880 1.6093 0.4639 0.7857 2.5543 0.5044 3.3383
Columns 8 to 9
1.4102 1.1489