Hi, | Date: Wed, 02 Apr 2003 14:39:05 -0400 | From: John Janmaat <john.janmaat at acadiau.ca> | Hello All, | | Is there a fast way to find the index(row and column) of a point in a | matrix? what do you mean as ,,a point in a matrix''? Perhaps which( ,arr.ind=T) does what you are looking for. Best wishes, Ott