getRow

Purpose

Returns a specified row from a matrix.

Format

y = getRow(a, row)

Parameters:

• a (NxK matrix) – data

• row (scalar) – The row of the matrix to extract

Returns:

y (1xK row vector) – extracted data

Examples

First create a matrix, a:

a = rndn(10, 10);

Now you can assign a variable y to be equal the third row of a with either of the following statements.

y = getRow(a, 3);

or

y = a[3, .];

While both statements will produce the same result, the first may make for code that is easier to read and interpret.

Remarks

getRow() is designed to give an alternative access to rows in a matrix than indexing the matrix by brackets.

See also

Functions getTrRow()