Description Usage Arguments Value Author(s) Examples
Extractor function to find all peaks in the chromatographic profiles
of an ALS object. Peaks are located as local maxima within the given
span (function findpeaks
) and at the given positions a
gaussian curve is fit (function fitpeaks
).
1  getAllPeaks(CList, span = NULL, eps = 1e01)

CList 
A list of profile matrices, each of the same dimensions (timepoints times components). 
span 
The span used for identifying local maxima in the
individual components. If not given, the default of

eps 
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.
Ron Wehrens
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[[2]][[2]][,"rt"], col = "gray")
## same for component 6
plot(teaMerged, what = "profiles", showWindows = FALSE,
mat.idx = 2, comp.idx = 6, col = "red")
abline(v = pks[[2]][[6]][,"rt"], col = "pink")

Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.