Hi, Based on the online manual of the streamline visualization routine (http://www.harrisgeospati...cs/streamline.html), it seems that the resulting streamlines can only be colored based on distance and direction. Using streamline, can I somehow color the resulting lines based on the value of another variable? If not, can I save the x,y coordinates of the produced streamlines to manipulate them and plot them using the other routines with more functionality? Cheers, Petros