peak detection and find time difference between two graphs

[SivaJ]

hi.

Basically i have two different graphs with phase differnece of 90. the problem is that using XY graph, i find it really hard to figure out the time differnece between the peaks. it should be first graph's peak value - peak of second graph. the time differnece much be constant as you can see from running the VI. iam getting some different values too. Is it possible to plot those on waveform chart?. if is possible then can you please show me how to do so.

thanks

[JamesC]

Duplicated Here.

[SivaJ]

yea sorry. i put it on the wrong place. i dont know how to delete this post..