a Distance function based on matching peaks

This method calculates the distance of two sets of peaks by just returning the number of matching peaks (m/z-values).

Usage

specDist.peakCount(peakTable1, peakTable2, mzabs=0.001, mzppm=10, symmetric=FALSE)

Methods

peakTable1 = "matrix", peakTable2 = "matrix"

specDist.peakCount(peakTable1, peakTable2, mzppm=10,symmetric=FALSE )

Arguments

peakTable1

a Matrix containing at least m/z-values, row must be called "mz"

peakTable2

the matrix for the other mz-values

mzabs

maximum absolute deviation for two matching peaks

mzppm

relative deviations in ppm for two matching peaks

symmetric

use symmetric pairwise m/z-matches only, or each match

Author

Joachim Kutzera, jkutzer@ipb-halle.de