overlappingFeatures {xcms} | R Documentation |
overlappingFeatures
identifies features that are overlapping or close in
the m/z - rt space.
overlappingFeatures(x, expandMz = 0, expandRt = 0, ppm = 0)
x |
|
expandMz |
|
expandRt |
|
ppm |
|
list
with indices of features (in featureDefinitions()
) that
are overlapping.
Johannes Rainer
## Load a test data set with detected peaks data(faahko_sub) ## Update the path to the files for the local system dirname(faahko_sub) <- system.file("cdf/KO", package = "faahKO") ## Disable parallel processing for this example register(SerialParam()) ## Correspondence analysis xdata <- groupChromPeaks(faahko_sub, param = PeakDensityParam(sampleGroups = c(1, 1, 1))) ## Identify overlapping features overlappingFeatures(xdata) ## Identify features that are separated on retention time by less than ## 2 minutes overlappingFeatures(xdata, expandRt = 60)