ppc.make.centroid.list {ppc} | R Documentation |
Function to make a list of peak centroids, from a set of peaks from different spectra
Description
This function starts with a list of peaks from a collection of spectra, and does a one
dimensional hierarchical clustering. It then cuts off the dendogram at height
user.parms$peak.gap, forming clusters of peaks. The medoids of each cluster form
hte final list of peak centroids.
Usage
ppc.make.centroid.list(data, user.parms)
Arguments
data |
List containing mass spc data |
user.parms |
List of user-defined parameters |
Value
cent |
Matrix of centroids, one per row |
peaklist |
Peaklist used |
clust.tree |
Dendrogram from hclust.1d |
all.peaks |
Vector of m/z values of all peaks used |
peak.gap |
Peak width used |
recluster |
Not currently used |
Author(s)
Balasubramanian Narasimhan and Rob Tibshirani
Examples
## for a complete worked example of this function in a PPC analysis see
## http://www-stat.stanford.edu/~tibs/PPC/Rdist/Rscript.rawdata
[Package
ppc version 1.01
Index]