The features described in this topic are obsolete
and should not be used in new IDL code.
IVECTOR
The following keyword to the IVECTOR procedure method is obsolete.
Keywords
MARK_POINTS (Set)
Set this keyword to mark all missing points with dots. Missing points are given by either non-finite data values (e.g. NaN) or by points which lie outside of the MIN_VALUE or MAX_VALUE range.