touchscreen sampling

[Andy Green]

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Somebody in the thread at some point said:
| On 18.06.2008 22:46, Dale Schumacher wrote:
|> The averaging scheme seems overly complicated.  Using a "median"
instead of
|> a "mean" (average) would automatically reject outliers and would also
track
|> the mid-point of a moving signal.  There should also be less math
involved
|> since you would only be sorting 2 sets of 32 values.

| Exactly what I suggested as well. I don't understand why people
| absolutely want to use averages and throw away outliers based on average
| calculations. Maybe because the concept of "mean" is easier to grasp
| than the concept of "median". A median solves all these problems of data
| having outliers with less math and better accuracy.

It's not a bad idea at all.  You're quite right it "automatically
rejects outliers".  But, it's going to get a bit slow as the number of
samples held in whatever the sorting structure is increases, and I doubt
an efficient implementation will be less "complicated"... but if someone
wants to send patches I'll be happy to be wrong.

- -Andy
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