[R] Finding Instances of a Pattern Throughout Data Set

[Bert Gunter]

I strongly suggest you consult with a local statistician. Your
description is far too vague (to me anyway) to make any sense of and
probably requires a good deal of back and forth between you and a
competent data analyst to pin down what the issues and constraints
are. For example, what constitutes "interesting" patterns? --  do the
data need to be analyzed in real time? -- Are visual displays
sufficient or is some kind of numeric indication needed? ... etc. etc.

One tentative word of advice, though: with this much data, do not get
embroiled with P values or other measures of statistical
"significance": anything you can see will be "significant."

-- Bert

On Mon, Apr 2, 2012 at 8:42 PM, Hasan Diwan <hasan.diwan at gmail.com> wrote:
> I have approximately 2.5 million rows from a number of sensor
> readings. Having plotted these, I can see a given pattern (say a spike
> in the amplitude away from the mean). I would now like to automate
> this procedure as we're expecting a great deal more data in the near
> future. Is there any package or function that will make this possible?
> Many thanks! I suppose, I could do something like:
> amplitude <- abs(sensorReadings[sensorReadings[,2] > 1.2 *
> median(sensorReadings[,2]),])
> Is this the most efficient way to do what I want or not?
> -- H
>
> --
> Sent from my mobile device
> Envoyait de mon portable
>
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> and provide commented, minimal, self-contained, reproducible code.



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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