ppc.predict.peaks1 {ppc} | R Documentation |
A function to find centroid peaks, in a list of individual peaks from one spectrum
Description
Takes centroid.fit (result of a call to make.centroids.list)
and looks for these m peaks in a peaklist from one spectrum.
returns ind - an m-vector of TRUE/FALSE values
and ht, the vector of corresponding peak heights. A peak
is considered present if it is within user.parms$peak.gap units from the centroid.
Usage
ppc.predict.peaks1(centroid.fit, logmz, peaklist.new)
Arguments
centroid.fit |
Result of call to make.centroid.list |
logmz |
Log of m/z values |
peaklist.new |
Matrix of peaks from a single spectrum. Rows are
(log m/z value, peak intensity) |
Value
ind |
indicator vector of presence/absence of peak |
ht |
Vector of heights. Note: peak is not present if ind=0, even if ht is >0 |
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]