Thanks David...I am trying to plot out data for various consultants by specialty - each specialty has a varying number of consultants - each consultant a varying number of data points....I found direct access of the elements of the dataframe was the only way to plot this type of variation, otherwise xyplot seemed to assume that there were a similar number of consultants per specialty. As for the strip.custom, I did try this, its just that I ended up embedding the function inline...I'm not sure there is any difference is there? Sorry I didn't follow protocol ...it is my first time! Steve
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