GetChromatogramArray: Get Array of XIC Chromatogram

In Yaroslav-Lyutvinskiy/MZAccessR: R Interface to mzAccess Web-API

Description

Batch analog of GetChromatogram function. Gets array of eXtracted Ion Current (XIC) chromatograms for specified LC-MS areas. Equal length of incoming lists is assumed. Corresponds to mzAccess web-service API function GetChromatogramsArray

Usage

GetChromatogramArray(FileNames, MZLows, MZHighs, RTLows, RTHighs,
  Cache = TRUE)

Arguments

FileNames	- List of names of original raw mass spectrometry file.
Cache	- If TRUE data will be loaded from fast access cache, if FALSE - from original raw files
MZLow	- List of minimum m/z values for LC-MS areas requested
MZHigh	- List of maximum m/z values for LC-MS areas requested
RTLow	- List of minimum retention time values for LC-MS areas requested
RTHigh	- List of maximum retention time values for LC-MS areas requested

Value

List of data frames. Each n-th data frame represent single XIC chromatogram specified by n-th members of incoming arrays and consist of of Retention Time and Intensities for requested LC-MS area

Examples

Coordinates for the glutamate peak observed in Figure 2A in reference paper
mz0 <- 148.0604342; dMz <- 0.002; d13C <- 1.0033548378;rtMin <- 8; rtMax <- 9;
Get Chromatograms for 1-st and 6-th isotopes
chrom <- GetChromatogramArray(
 rep("Thermo_QE_cells_72h_LA_1", 2),
 c(mz0-dMz, mz0 + 5*d13C - dMz),
 c(mz0+dMz, mz0 + 5*d13C + dMz),
 rep(rtMin, 2), rep(rtMax, 2))

Yaroslav-Lyutvinskiy/MZAccessR documentation built on May 10, 2019, 12:06 a.m.