Hello,
 
I have seen that adding around 100 annotations significantly slows down my program. I noticed that in other posts about annotations that NI needs to do a more efficient job with implementing annotations.  So there are known problems with annotations, ok.
 
I need to display a horizontal line across the graph to indicate an event in time ( yaxis is a time axis).  I was using annotations to do this.  What would be a good alternative?  I could implement cursors, but do they have the same problem that annotations have?  I could put up a plot as a horizontal line, but I don't know if that would be a drag as well.
 
What do you think?
 
Scott
 
XP, VS2005, C#, NI MS7.1