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Topic: EIC and npeak correlation (Read 4448 times) previous topic - next topic

EIC and npeak correlation

Hello

I have a question about the .tsv file "n peaks" column and its correlation with the corresponding EIC.

Sometimes, it appears that they do not correlate, for example- the "n peaks" column will indicate "0" peaks for a group when I can see a peak in the EIC (at 10^4 abundance, which for some peaks indicates "1" and not "0").  Is this caused by a default s/n value or threshold that I have somewhere in my workup? 

As always, thank you for any help. 

Ashley

Re: EIC and npeak correlation

Reply #1
You see this effect if these features were not initially detected during feature detection ( i.e., they were below S/N threshold),
but filled in later by fillPeaks.

Also see
http://metlinwiki.scripps.edu/mediawiki ... of_samples

Re: EIC and npeak correlation

Reply #2
Interesting- so I should follow the npeaks read-out when the two (EIC and npeaks) don't agree?