Need to average numbers

How can you make a running average of numbers. I have tried using
both the mean and also the example that uses a while loop and
registers.
An example of what I am trying to do is a sine wave generator was
set up and a random number from .001 to 1 generator was set
up to add to the incoming sine wave. This has a wait until
250ms so that the wave dances up an down. But the phase stays the
same. For example the peak goes up and down but the x
location of the peak does not change. I have picked off the top
most data points and I would like to get the average of these changing
y values I thought making a wave from it and using mean
would do it but it hasn't worked. The mean changes with the new
wave. Any ideas
I have sent an attachment of something I have tried.
Thanks for any help
R Tucker
Attachments:
averaging work.vi ‏85 KB

You need to remove all wires leading to the shift register on the left side of the FOR loop. Only a VI with uninitialized shift register can retain history data between calls.
(With every call, you are currently initializeing all shift registers with the same value and thus you only get current the input value back at each call)
You also need to set the loop count to 1. There is no need to run it 1000 times, it would actually again break the intended function).
Also: Since you are calling this VI in several locations, you need to make it reentrant, else you are mixing numbers from different data threads.
Message Edited by altenbach on 09-13-2005 01:11 PM
LabVIEW Champion . Do more with less code and in less time .

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