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horzcat

Concatenate symbolic arrays horizontally

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Syntax

horzcat(A1,...,AN)
[A1 ... AN]

Description

horzcat(A1,...,AN) horizontally concatenates the symbolic arrays A1,...,AN. For vectors and matrices, all inputs must have the same number of rows. For multidimensional arrays, horzcat concatenates inputs along the second dimension. The remaining dimensions must match.

example

[A1 ... AN] is a shortcut for horzcat(A1,...,AN).

example

Examples

Concatenate Two Symbolic Matrices Horizontally

Create matrices A and B.

A = sym('a%d%d',[2 2])
B = sym('b%d%d',[2 2])
A =
[ a11, a12]
[ a21, a22]
B =
[ b11, b12]
[ b21, b22]

Concatenate A and B.

horzcat(A,B)
ans =
[ a11, a12, b11, b12]
[ a21, a22, b21, b22]

Alternatively, use the shortcut [A B].

[A B]
ans =
[ a11, a12, b11, b12]
[ a21, a22, b21, b22]

Concatenate Multiple Symbolic Arrays Horizontally

A = sym('a%d',[3 1]);
B = sym('b%d%d',[3 3]);
C = sym('c%d%d',[3 2]);
horzcat(C,A,B)

ans =
[ c11, c12, a1, b11, b12, b13]
[ c21, c22, a2, b21, b22, b23]
[ c31, c32, a3, b31, b32, b33]

Alternatively, use the shortcut [C A B].

[C A B]
ans =
[ c11, c12, a1, b11, b12, b13]
[ c21, c22, a2, b21, b22, b23]
[ c31, c32, a3, b31, b32, b33]

Concatenate Multidimensional Arrays Horizontally

Create the 3-D symbolic arrays A and B.

A = sym('a%d%d',[2 3]);
A(:,:,2) = -A
B = sym('b%d%d', [2 2]);
B(:,:,2) = -B
A(:,:,1) = 
[ a11, a12, a13]
[ a21, a22, a23]
A(:,:,2) = 
[ -a11, -a12, -a13]
[ -a21, -a22, -a23]
 
B(:,:,1) = 
[ b11, b12]
[ b21, b22]
B(:,:,2) = 
[ -b11, -b12]
[ -b21, -b22]

Use horzcat to concatenate A and B.

horzcat(A,B)
ans(:,:,1) = 
[ a11, a12, a13, b11, b12]
[ a21, a22, a23, b21, b22]
ans(:,:,2) = 
[ -a11, -a12, -a13, -b11, -b12]
[ -a21, -a22, -a23, -b21, -b22]

Alternatively, use the shortcut [A B].

[A B]
ans(:,:,1) = 
[ a11, a12, a13, b11, b12]
[ a21, a22, a23, b21, b22]
ans(:,:,2) = 
[ -a11, -a12, -a13, -b11, -b12]
[ -a21, -a22, -a23, -b21, -b22]

Input Arguments

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Input arrays, specified as symbolic scalar variables, matrix variables, matrix functions, or vectors, matrices, or multidimensional arrays of symbolic scalar variables.

Version History

Introduced before R2006a

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See Also

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