exportVariableMetadata,proFIAset-method {proFIA} | R Documentation |
Export the variable metadata of an experiment, to be used for statistical analysis.
## S4 method for signature 'proFIAset' exportVariableMetadata(object, filename = NULL)
object |
A proFIAset object. |
filename |
If not NULL the result will be written in filename |
A dataframe with the following columns :
variableID an ID similar to the one of the peak table.
mzMed the median value of group in the m/z dimension.
mzMin the minimum value of the group in the m/z dimension.
mzMax the maximum value of the group in the m/z dimension.
scanMin the first scan on which the signal is detected.
scanMax the last scan on which the signal is detected.
nPeaks The number of peaks grouped in a group.
meanSolvent The mean of solvent in the acquisition.
signalOverSolventPvalue The mean p-value of the group.
corMean The mean of the matrix effect indicator.
SigSolMean The mean of ratio of the signal max intensity on the solvent max intensity.
if(require(plasFIA)){ data(plasSet) vtab<-exportVariableMetadata(plasSet) head(vtab) }