getTrRow#

Purpose#

Transposes a matrix and then returns a single row from it.

Format#

y = getTrRow(a, row)#

Parameters:

a (NxK matrix) – data
row (scalar) – The row of the matrix to extract

Returns:

y (1xK row vector) – extracted data.

Examples#

rndseed 12984698;

// Random data matrix
a = rndn(5, 5);

/*
** Transpose matrix and get data
** in the third row
*/
y = getTrRow(a, 3);

After this code

a =   -0.021549592       -1.5369774       0.25847435       0.24440036      -0.67770177
      0.040552431        -1.2555734       0.70911664       1.1284965       0.56128146
      0.63161066         -0.30454776      -0.54252340      0.098013056     -0.25289740
      1.6585887          1.0805022        0.62438630       -0.21962685     0.37892022
      -0.68182580        0.47291873       -0.29240734      1.9273971       -1.3318647

y =   0.63161066
      -0.30454776
      -0.54252340
      0.098013056
      -0.25289740

Remarks#

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