baseline.corr {ptw} | R Documentation |
This function estimates a baseline using asymmetric least squares and subtracts it from the data.
baseline.corr(y, lambda = 1e7, p = 0.001)
y |
signal(s) to correct. This can be a vector (containing one signal) or a matrix of signals(one signal per row) |
lambda |
smoothing parameter for weighted asymmetric least squares baseline estimation. |
p |
asymmetry parameter for weighted asymmetric least squares baseline estimation |
ycorr |
baseline corrected signal(s): a vector or a matrix of the same dimension as the input signal(s) |
Paul Eilers, Jan Gerretzen
Eilers, P.H.C. Parametric Time Warping. Anal. Chem., 2004, 76, 404 - 411
data(gaschrom) plot(gaschrom[1,], type = "l", ylim = c(0, 100)) lines(baseline.corr(gaschrom[1,]), col = 2)