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DADiSP Worksheet Functions > Function Categories > Matrix Math and Special Matrices > COLNOS

COLNOS

Purpose:

Returns an array of column numbers.

Syntax:

COLNOS(a)

a

-

A series or table.

Returns:

An array of size(a).

Example:

W1: ones(3)

W2: colnos(W1)

W2 == {{1, 2, 3},

{1, 2, 3},

{1, 2, 3}}

W1: zeros(3, 2)

W2: colnos(W1)

W2 == {{1, 2},

{1, 2},

{1, 2}}

Remarks:

COLNOS is used by several of the matrix dissection routines to select specific regions of an array.

COLNOS(a) == ROWIDX(a)

See Also: