corPEAKS: Correlate two peaks' intensities across all samples.

In lauzikaite/massFlowR: LC-MS Data Pre-Processing

Description

Function takes a pair of peaks and performs Pearson correlation of their "into" values across the samples in which they were detected.

Usage

corPEAKS(pair, pkg_ints, min_samples_n)

Arguments

pair	matrix with 1 row and 2 columns: "from" and "to", which indicate peaks' peakids.
pkg_ints	data.frame which must contain columns "peakid", "run_order" and "into", indicating intensities of every peak in a peak-group in every sample in which they were detected.
min_samples_n	numeric specifying the minimum number of samples in which peak has to be detected in order to be correlated with other peaks.

Value

Function returns a numeric indicating Pearson correlation coefficient between the two peaks of interest.

lauzikaite/massFlowR documentation built on April 29, 2020, 9:45 a.m.