unidpdf (Statistics Toolbox)

Discrete uniform probability density function (pdf).

Syntax

Y = unidpdf(X,N)

Description

unidpdf(X,N) computes the discrete uniform pdf with parameter settings, N, at the values in X. The arguments X and N must be the same size except that a scalar argument functions as a constant matrix of the same size of the other argument.

The parameter N must be a positive integer.

The discrete uniform pdf is:

You can think of y as the probability of observing any one number between 1 and n.

Examples

For fixed n, the uniform discrete pdf is a constant.

y = unidpdf(1:6,10)

y =

    0.1000    0.1000    0.1000    0.1000    0.1000    0.1000

Now fix x , and vary n.

likelihood = unidpdf(5,4:9)

likelihood =

         0    0.2000    0.1667    0.1429    0.1250    0.1111

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