Metabolomics Society Forum

Software => R => XCMS => Topic started by: plasma33 on June 06, 2012, 07:53:33 PM

Title: xcmsSet Feature Detection Details
Post by: plasma33 on June 06, 2012, 07:53:33 PM
Hi guys,

I need complete details of xcmsSet Feature Detection. I need information like what different sorts of methods are used and what all other features do the xcmsSet have etc.

Feature detection More Details plz->

    method : centWave
    ppm 30
    snthr 6
    peakwidth 10 60
    mzdiff 0.01
    prefilter peaks 3
    prefilter intensity 100

Is there any manual that provides some info.

Thanks in advance.

Cheers
plasma33
Title: Re: xcmsSet Feature Detection Details
Post by: Carsten on June 07, 2012, 02:20:38 AM
Hi,

a good starting point would be the centWave paper: http://http://www.biomedcentral.com/1471-2105/9/504
Also the manpage of findPeaks.centWave provides some information about the parameters.

A longer explanation about the peakwidth parameter see this post in the FAQ http://http://metabolomics-forum.com/viewtopic.php?f=25&t=222

So long,
Carsten
Title: Re: xcmsSet Feature Detection Details
Post by: plasma33 on June 08, 2012, 11:42:39 PM
Thanks for the kind reply. The links were very helpful.

Cheers
plasma33