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What is averaging algorithm?

 
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lala
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What is averaging algorithm?
PostPosted: Thu Jun 03, 2004 3:08 am     Reply with quote
Confused

hello;

What is averaging algorithm? i just study on resistive touchscreen technology and want to know how the averaging algorithm apply to this technology?

thank you
SteveS



Joined: 27 Oct 2003
Posts: 126

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PostPosted: Thu Jun 03, 2004 8:33 am     Reply with quote
Since filtering comes up a lot I wrote up a real short and simple introduction to filters in the code section. Hope that helps.

- SteveS
bdring
Guest
PostPosted: Fri Jun 11, 2004 2:01 pm     Reply with quote
I often use a rolling average. You can call this hundreds or times without the need to store a bunch of values in RAM. Adjust the variable type to fit your application. It is not very fast, but it works for me.


Code:
int16 avg(int16 oldVal, int16 newVal, int8 sampleNo)
{
   return = oldVal + (newVal-oldVal)/sampleNo;
}



Initialize the value to zero and call it as shown below.

Code:
oldVal = 0;
oldVal = avg(oldVal, 100, 1);
oldVal = avg(oldVal, 120, 2);
oldVal = avg(oldVal, 140, 3);

oldVal will hold the average at every stage and end up with 130 in this case.
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