Thanks for the answers to my last post.
I was still wondering if it is normal for my trend graph (plot) to flash all the time. I have a couple of virtual points set up to simulate data. The points are updating about once a second, one is random number say from 12 to 15 and the other is step function, saw tooth pattern. Which all works, but the flashing part ... is a little strange. Is it a result of using TomCat and Java?
I searched the form for flashing plot but did not see anything that related to this issue. I have read the post of other people using the plot, so either theirs does not flash or it does not bother them (maybe flash rate is slower).