Extract EICs of some features from some samples.
A data.frame contains the variable_id, mz and rt of features to extract.
object from xcms. If you use massprocesser, this should be the xdata3.
positive or negative.
default is 15 ppm.
default is 30 ppm.
Number of threads.
aad points in the EIC or not.
what samples groups are used to extract EICs
png of pdf