submd {enviGCMS} | R Documentation |
Get the differences of two GC/LC-MS data
Description
Get the differences of two GC/LC-MS data
Usage
submd(data1, data2, mzstep = 0.1, rtstep = 0.01)
Arguments
data1 |
data file path of first data |
data2 |
data file path of second data |
mzstep |
the m/z step for generating matrix data from raw mass spectral data |
rtstep |
the alignment accuracy of retention time, e.g. 0.01 means the retention times of combined data should be the same at the accuracy 0.01s. Higher rtstep would return less scans for combined data |
Value
list four matrix with the row as scantime in second and column as m/z, the first matrix refer to data 1, the second matrix refer to data 2, the third matrix refer to data1 - data2 while the fourth refer to data2 - data1, minus values are imputed by 0
Examples
## Not run:
library(faahKO)
cdfpath <- system.file('cdf', package = 'faahKO')
cdffiles <- list.files(cdfpath, recursive = TRUE, full.names = TRUE)
matrix <- submd(cdffiles[1],cdffiles[7])
## End(Not run)
[Package enviGCMS version 0.7.1 Index]