pamr.plotcen: A function to plot the shrunken class centroids, from the...

In pamr: Pam: Prediction Analysis for Microarrays

A function to plot the shrunken class centroids, from the nearest shrunken centroid classifier

Description

A function to plot the shrunken class centroids, from the nearest shrunken centroid classifier produced by pamr.train

Usage

pamr.plotcen(fit, data, threshold)

Arguments

fit	The result of a call to pamr.train
data	The input data, in the same form as that used by pamr.train
threshold	The desired threshold value

Details

pamr.plotcen plots the shrunken class centroids for each class, for genes surviving the threshold for at least once class. If genenames are included in "data", they are added to the plot. Note: for many classes and long gene names, this plot may need some manual prettying.

Author(s)

Trevor Hastie, Robert Tibshirani, Balasubramanian Narasimhan, and Gilbert Chu

Examples

suppressWarnings(RNGversion("3.5.0"))
set.seed(120)
x <- matrix(rnorm(1000*20),ncol=20)
y <- sample(c(1:4),size=20,replace=TRUE)
mydata <- list(x=x,y=y,genenames=as.character(1:1000))
mytrain <-   pamr.train(mydata)
mycv <- pamr.cv(mytrain,mydata)
pamr.plotcen(mytrain, mydata,threshold=1.6)
 

pamr documentation built on July 1, 2024, 9:06 a.m.