Plot initialization takes a long time

Question

Hello,
I've attached a vi that is a copy of some code I'm using in my application.  The behavior I want is for the strip chart to scroll from right to left.  The newest data will be added to the right side of the screen and scroll left, like a strip chart.  For this reason, the right side time is shown as 0 and the left side is shown as negative time, taken from the seconds to graph control.  It works just fine in my application with two exceptions.  When I set seconds to graph to a low number, say 1 second, all is well.  When I set it to a high number, like 100 seconds, the initialization takes a long time.  Based on this code, I've narrowed it down to the graph init time, and not the init of the arrays.  Is there a faster way to accomplish this same behaviour?  In addition, does anyone know why when the seconds to graph control is set to numbers greater than 30, the left side of the x-axis holds at -30, but for numbers less than 30, the left side shows that number?  It's supposed to show a negative of whatever the seconds to graph says.
Thanks.
Attachments:
diagostic.vi ‏1246 KB

Answer 1

Dennis,
Thanks for the call about the marker values.  When I received the solution from NI, I just copied it over and it worked.  I never dug into how it worked.  I just removed the array to the marker values and it inits quickly now.  Thanks.  As for the history, best I can remember, the original chart drew and compressed the plot as data were added.  I wanted a chart of fixed width that would init to nothing drawn, and have the drawing itself scroll across from right to left as the time ticked off.  It's working great now.  Thanks.
Rick