| ImportFameSettings {TargetSearch} | R Documentation |
This function imports a list of retention standard markers.
ImportFameSettings(tmp.file = NA, mass = NA, ...)
tmp.file |
A character string naming a file with standard markers. |
mass |
The m/z standard marker. |
... |
Other options passed to read.delim function. |
The standard marker file is a tab-delimited text file with 3 columns. Column names doesn't matter. They must be in the following order.
LowerLimit - The Retention time lower limit in seconds.
UpperLimit - The Retention time upper limit in seconds.
RIstandard - The RI value of that standard.
If no arguments are given, a default object will be returned.
A tsRim object.
Alvaro Cuadros-Inostroza, Matthew Hannah, Henning Redestig
# get the RI marker definition file
cdfpath <- file.path(.find.package("TargetSearchData"), "gc-ms-data")
rim.file <- file.path(cdfpath, "rimLimits.txt")
# set the mass marker to 87
mass <- 87
# load the definition
rimLimits <- ImportFameSettings(rim.file, mass = mass)
# sometimes you need to change the limits of a particular standard
rimLimits(rimLimits)[2,] <- c(410, 450)
# to change the mass value
rimMass(rimLimits) <- 85