[R] [Q] Newbie (continued.. at least I got R running allready :-)

Gabor Grothendieck ggrothendieck at myway.com
Fri Jun 18 14:34:25 CEST 2004

Check out ?turnpoints in the pastecs library.  



to see the data structure you get back.  It identifies the peaks
and pits and other associated information.

Date:   Fri, 18 Jun 2004 11:23:54 +0200 
From:   jeroen clarysse <jeroen.clarysse at easynet.be>
To:   <r-help at stat.math.ethz.ch> 
Subject:   [R] [Q] Newbie (continued.. at least I got R running allready :-) 

Hi all

a week ago, I posted a newbie question in data smoothing &
maximum-extraction with R. I got quite a lot of response, but I'm still
kinda stuck with it...

I'll restate the problem : i got a datafile with 2400 measuerements (every
250msec) of a CO2 measurement device, capturing the breath of a subject. I
uploaded such a sample here :


now I wish to figure out where each breath expiration ceiling takes place ,
as shown on this graph :


I'm kinda stuck on how to get this running in R.

I really hope someone can help me out. If you guys can get me running, I
promise to promote R as often as I can here on our faculty (which still uses
Statistica for almost everything)

thanks a million in advance !

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