FINDCOL

Purpose:

Returns the columns that meet a condition.

FINDCOL(condition)

condition

A binary series or array.

A series, the column numbers that meet the condition.

W1: ravel(1..12, 4)

W2: findcol(W1 > 7)

W1 == {{1, 5, 9},

{2, 6, 10},

{3, 7, 11},

{4, 8, 12}}

W2 == {2, 3}

W2 indicates that columns 2 and 3 contain values that exceed 7.

A column is returned only once even if multiple values meet the condition.