How to see updated xy values of Mutiple plot on a single XY graph

I am receiving the GPS data from two sources through UDP protocols but unable to get the previous values of lat/long on the XY graph.
How is it possible to do it??
Kindly guide me so that it displays the previous set of values as well
Attachments:
lat_long of 2 sources.png ‏46 KB

Hi Axher,
use shift registers to store previous values!
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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How to see updated xy values of Mutiple plot on a single XY graph

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