averaging in the loop

[looser]

Hi all.  I would like to average 2D arrays whilst running the measurement. I attachhed the VI below, in which i receive data from 2 instruments and plotting them into a XY graph with history. What i want to do is averaging graphs every 200th sampling and plot it.

to make it clear:

 i start the measurement and collect 200 x and y datas lets call sample 1

as running the loop another 200 x and y datas (201th-401th datas) called sample2

and average them  ((1th+201th)/2, (2th+ 202th)/2,... and plotting.

when i get the another 200 x,y  datas ( 402th-602th  datas) called sample 3, i want to average

those with previous ones ( 1th+201th+402th)/3, (2th+202th+403th)/3

and keep doing this process till i stop the measurment.

I am a bit confused how to start with algohrithm. any hellp is appreciated

thanks

[Broken_Arrow]

Slow down! 

First of all, lets assume you specify a resource (which you aren't), are you getting the data you want in the atttached VI by reading the VISA resource as opposed to the reading the read buffer????

[looser]

yes , I have 2 visa resources ( Multimeters ).

[Broken_Arrow]

...and you are getting data from the multimeters the way the VI is wired?

[looser]

yes it works fine. isnt it correct?

[looser]

i didnt show the resource name wirings, which are thee gpib adresses

[Broken_Arrow]

The missing resource was one thing. I was more surprised at the fact that you wired the resource into the string>number function, so your data IS the resource. Interesting.

Anyway, sorry if it seems I hijacked your thread with an urelated question.

Attached is a VI (saved to 8.5) that will hopefully give you some ideas on how to build the three samples of 200. I didn't quite understand your averaging, so I guessed at it.