Re: [R] peak finding

2008-03-25 Thread stephen sefick
I am not sure how to implement this in R, but beam forming, used in geophysics, sounds like an alternative. We are currently looking at this with the help of a matlab guru to look at the shift in the dissolved oxygen peaks as you go down river. This assumes that you have an array of reading seppe

Re: [R] peak finding

2008-03-25 Thread Robert A LaBudde
At 10:48 PM 3/24/2008, Chistos wrote: >John, > >There is a peak finding algorithm attributed to Prof. Ripley in the R-help >archive. It has a span parameter which might give you something close to >what you seem to be looking for. > >http://finzi.psych.upenn.edu/R/Rhelp02a/archive/33097.html > >-C

Re: [R] peak finding

2008-03-24 Thread Andrew Robinson
ely necessary): +61 7 3826 7304 > > Mobile: +61 4 8819 4402 > > Home Phone: +61 7 3286 7700 > > mailto:[EMAIL PROTECTED] > > http://www.cmis.csiro.au/bill.venables/ > > > > -Original Message- > > From:

Re: [R] peak finding

2008-03-24 Thread Christos Hatzis
; From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Research Scholar > Sent: Monday, March 24, 2008 11:24 PM > To: [EMAIL PROTECTED] > Cc: r-help@r-project.org > Subject: Re: [R] peak finding > > Hi > Thanks for replying. I meant x[4] is the start of a peak

Re: [R] peak finding

2008-03-24 Thread Bill.Venables
length encoding, might be useful in this regard, too. Bill Venables. -Original Message- From: Research Scholar [mailto:[EMAIL PROTECTED] Sent: Tuesday, 25 March 2008 1:24 PM To: Venables, Bill (CMIS, Cleveland) Cc: r-help@r-project.org Subject: Re: [R] peak finding Hi Thanks for replyin

Re: [R] peak finding

2008-03-24 Thread Research Scholar
+61 7 3286 7700 > mailto:[EMAIL PROTECTED] > http://www.cmis.csiro.au/bill.venables/ > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Research Scholar > Sent: Tuesday, 25 March 2008 12:54 PM > To: r-help@r-project.org > S

Re: [R] peak finding

2008-03-24 Thread Bill.Venables
700 mailto:[EMAIL PROTECTED] http://www.cmis.csiro.au/bill.venables/ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Research Scholar Sent: Tuesday, 25 March 2008 12:54 PM To: r-help@r-project.org Subject: [R] peak finding Hi all Is there a function that can f

[R] peak finding

2008-03-24 Thread Research Scholar
Hi all Is there a function that can find the start and end position of peaks in a set of numbers. eg. x=c(14,15,12,11,12,13,14,15,16,15,14,13,12,11,14,12) y=somefunction(x) y 4 14 Thanks John [[alternative HTML version deleted]] __ R-help@r-