2009/7/21 Markus Mühlbacher <muehliman at yahoo.com>: > So just that I understand right. x and y are the scalings of the x and y axis and the matrix represents the color of the points at each gridpoint? Precisely! Try ?image for more details. -- Michael Knudsen micknudsen at gmail.com http://lifeofknudsen.blogspot.com/