Repmat:replicate and tile an array

Repmat:replicate and tile an array

Syntax

B = Repmat (a,m,n)

B = Repmat (a,[m n])

B = Repmat (a,[m n p ...])

Description

b = Repmat (a,m,n) creates a large matrix B consisting of an m-by-n tiling of copies of a. The size of B is [size (a,1) *m, (Size (a,2) *n]. The statement Repmat (A,N) creates an n-by-n tiling.

B = Repmat (a,[m n]) accomplishes the same result as Repmat (A,m,n).

B = repmat (A,[m n p ...])  produces a multidimensional array b composed of copies of a .  the size of b is [size (a,1) *m, size (a,2) *n, size (A,3) *p,  ...].  

Repmat (A,m,n) when a was a scalar, produces an m-by-n matrix filled with a ' s value and have A's class. For certain values, you can achieve the same results using other functions, as shown by the following Examples:repmat (NaN , m,n) returns the same result as NaN (M,n). Repmat (single (INF), m,n) are the same as INF (M,n, ' single '). Repmat (int8 (0), m,n) is the same as zeros (M,n, ' int8 '). Repmat (UInt32 (1), m,n) is the same as ones (M,n, ' UInt32 '). Repmat (Eps,m,n) is the same as EPS (Ones (M,n)).

Examples

In this example, Repmat replicates copies of the Second-order identity matrix, resulting in a "checkerboard" pattern.

B = Repmat (eye (2), 3,4)%size (eye (2), 1) = 2; Size (eye (2), 2) = 2;

B =% (3*2;4*2;) eye (2) whole to right becomes 8; down to 6

1 0 1 0 1 0 1 0

0 1 0 1 0 1 0 1

1 0 1 0 1 0 1 0

0 1 0 1 0 1 0 1

1 0 1 0 1 0 1 0

0 1 0 1 0 1 0 1

The statement N = Repmat (nan,[2 3]) creates a 2-by-3 matrix of NaNs.

Repmat:replicate and tile an array