Extractor function to find all peaks in the chromatographic profiles
of an ALS object. Peaks are located as local maxima within the given
findpeaks) and at the given positions a
gaussian curve is fit (function
A list of profile matrices, each of the same dimensions (timepoints times components).
The span used for identifying local maxima in the
individual components. If not given, the default of
Minimal value for the peak width, basically used to eliminate peaks with zero width.
The result is a list, with each element corresponding to one data file, and containing data for the fitted peaks for each of the ALS components. Note that this function presents the "rt", "sd" and "FWHM" fields in real time units.
1 2 3 4 5 6 7 8 9 10 11 12 13
data(teaMerged) pks <- getAllPeaks(teaMerged$CList, span = 11) ## show component 2 from the second file par(mfrow = c(2,1)) plot(teaMerged, what = "profiles", showWindows = FALSE, mat.idx = 2, comp.idx = 2) ## and show where the peaks are picked abline(v = pks[][][,"rt"], col = "gray") ## same for component 6 plot(teaMerged, what = "profiles", showWindows = FALSE, mat.idx = 2, comp.idx = 6, col = "red") abline(v = pks[][][,"rt"], col = "pink")
Loading required package: ALS Loading required package: nnls Loading required package: Iso Iso 0.0-17 Loading required package: ptw
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.