;+
;FUNCTION: dimen2
;INPUT: matrix
;RETURNS: scaler int: size of second dimension (1 if dimension doesn't exist)
;
;CREATED BY: Davin Larson
;LAST MODIFICATION; @(#)dimen2.pro 1.3 95/08/24
;-
function dimen2, matrx
s = size(matrx)
if s[0] lt 2 then return,1 ; scalar or one dimensional
return, s[2]
end