how to clear waveform graph history

[vasurayapudi]

Hi guyz,

I am stuck with this waveform graph.My intension is to graph two values against time which I need them  in minutes.I wrote a VI which I am attaching.The wierd thing is when I run the program  stop it and run again it would start from the previous end point.But if I go to block diagram window and move some controls from left to right or zigzag and then run the program it runs from zero.I could nt understand why this is happening.I tried by giving the 0 array to history property node for wave form chart and 0 array to value for wave form graph.But the result is same which I stated above.

Please help me out.

[PJS]

In addition to writing an empty array to the history node, you also need to initialize your shift register with an empty 2 day array.  I think that should solve your problem.