Generates random data from the uniform probability distribution. There are two forms.

Syntax

RND = UnifRnd(a, b, Rows, Cols, Seed, State)

RND = UnifRnd(a, b, Seed, State)

Arguments

Name

Description

a

(optional)

Lower end point of the distribution. A scalar, vector or matrix.

b

(optional)

Upper end point of the distribution. A scalar, vector or matrix.

Rows (optional)

Number of output rows. A positive integer. Only valid when a and b are scalars.

Cols (optional)

Number of output columns. A positive integer. Only valid when a and b are scalars.

Seed

(optional)

The seed to initialize the random number generator. See Comments below.

State (optional)

Set to "discard" if the state of the pseudo random number is not to be retained for future use. The default is "retain".

Output

Name

Description

RND

Random numbers from the continuous uniform distribution.  Its size is determined by the input arguments.  See Comments below.

Example 1

Generate two random numbers from continuous uniform distribution with lower and upper limit pairs of (0, 2) and (-1, 1), respectively:

Syntax

rnd = UnifRnd([0,-1],[2,1])

Result

rnd =  0.4053    0.3443

Example 2

Generate a 1x4 vector of random numbers from a continuous uniform distribution within the interval (-1, 1):

Syntax

rnd = UnifRnd(-1,1,1,4)

Result

rnd = 0.6762   -0.9607    0.3626   -0.2410

Comments

a and b must be the same size.

If a and b are both omitted then a = 0 and b = 1.

If the optional size inputs are omitted, the size of the output is solely determined by the size of the two inputs a and b. Each entry in the output uses the corresponding entries in the two inputs.

If the optional size inputs are provided, both must be supplied. In that case a and b must be scalars and the size of the output is determined by Rows and Cols. That is, the inputs a and b are used for each element of the output.

The Seed can be any number. Using a seed allows a random sequence to be repeated.

See Also:

NormRnd