COLIDX

Purpose:

Returns the row indices for each column of the input table.

COLIDX(a, unravel)

A series or multi-column table.

unravel

Optional. An integer indicating if "unraveled" (i.e. sequential) indices should be returned:

0:	Normal indices (default)
1:	Unraveled (sequential) indices

An array or series.

W1: gnorm(5, 1)

W2: colidx(W1)

W2 == {1, 2, 3, 4, 5}

W1: {{10, 20, 30},

{20, 10, 30},

{30, 20, 10}}

W2: colidx(w1)

W2 == {{1, 1, 1},

{2, 2, 2},

{3, 3, 3}}

W1: {{10, 20, 30},

{20, 10, 30},

{30, 20, 10}}

a = colidx(W1, 1)

b = W1[a]

a == {{1, 4, 7},

{2, 5, 8},

{3, 6, 9}}

b == W1

COLIDX(a, 1) returns the indices in sequential, unraveled order. This form is useful in array reference expressions.

Use XVALS to return the X axis values.

COLIDX(a) == ROWNOS(a)