topIons

intensity

the number of most intense m/z to be maintained


Retain the most intense ions in a spectrum and return sorted spectrum in 2-col matrix 


 utilities

Ion fragmentation provides structural information for metabolite identification. This package provides utility functions to manage and analyse MS2/MS3 fragmentation data from ion trap mass spectrometry. It was designed for high throughput metabolomics data with many biological samples and a large numer of ion trees collected. Tests have been done with data from low-resolution mass spectrometry but could be readily extended to precursor ion based fragmentation data from high resoultion mass spectrometry.

Mingshu Cao

iontree

Data management and analysis of ion trees from ion-trap mass spectrometry

topIons function

Retain the most intense ions in a spectrum and return sorted spectrum in 2-col matrix

topIons: Retain spectrum with the most intense ions

Description

Usage

Arguments

Value

Details

References

Examples