Re: [R] peak detection

2010-12-15 Thread Carl Witthoft
previously I wrote... THere's the peaks package which will do some peak detection, or 'peaks' in the simecol package. Or msc.peaks.find in caMassClass, I'm madly trying to remember what spectral package I found which has a tool similar to msextrema but returns a couple more useful lists d

Re: [R] peak detection

2010-12-14 Thread Carl Witthoft
THere's the peaks package which will do some peak detection, or 'peaks' in the simecol package. Or msc.peaks.find in caMassClass, I'm madly trying to remember what spectral package I found which has a tool similar to msextrema but returns a couple more useful lists describing the data and t

Re: [R] peak detection

2010-12-14 Thread Joe Stuart
Thank you. I will look at that also. On Mon, Dec 13, 2010 at 9:49 PM, Michael Bedward wrote: > Hi Joe, > > Just for info, I've done this in the past by applying lowess followed > by diff to a vector, then identifying points with change of sign in > the diffs. > > Michael > > On 14 December 2010 1

Re: [R] peak detection

2010-12-13 Thread Michael Bedward
Hi Joe, Just for info, I've done this in the past by applying lowess followed by diff to a vector, then identifying points with change of sign in the diffs. Michael On 14 December 2010 14:22, Joe Stuart wrote: > Never mind. I did find this package, which seems to do the trick. Thanks > > http:/

Re: [R] peak detection

2010-12-13 Thread Joe Stuart
Never mind. I did find this package, which seems to do the trick. Thanks http://rgm2.lab.nig.ac.jp/RGM2/R_man-2.9.0/library/msProcess/man/msExtrema.html On Mon, Dec 13, 2010 at 9:05 PM, Joe Stuart wrote: > Hi, > I was wondering if anyone knows of a package that contains the ability > for peak/va

[R] peak detection

2010-12-13 Thread Joe Stuart
Hi, I was wondering if anyone knows of a package that contains the ability for peak/valley detection. Here is an example of what I'm looking for, only problem is that it's written in Matlab. http://www.billauer.co.il/peakdet.html Thanks for any help in advance. -Joe