Nothing
plot.sparsenet=function(x, xvar=c("rsq","lambda","norm"),which.gamma=NULL,label=FALSE,...){
oldpar=par(mar=c(4,4,4,1))
on.exit(par(oldpar))
xvar=match.arg(xvar)
switch(xvar,
rsq={iname="Fraction Training Variance Explained";xvar="dev"},
lambda={iname=expression(log (lambda))},
norm={iname="L1 Norm"}
)
lamax=x$max.lambda
coeflist=x$coefficients
ngamma=length(coeflist)
if(is.null(which.gamma))which.gamma=1:ngamma
coeflistseq=seq(along=coeflist)
which.gamma=coeflistseq[match(which.gamma,coeflistseq,0)]
rsq=x$rsq
ylims=range(sapply(coeflist[which.gamma],function(x)range(x$beta)))
for(i in which.gamma){
x=coeflist[[i]]
beta=x$beta
p=nrow(beta)
beta=cbind2(rep(0,p),beta)
plotCoef(beta,lambda=c(lamax,x$lambda),df=c(0,x$df),dev=c(0,rsq[i,]),label=label,xvar=xvar,xlab=iname,ylim=ylims,...)
if(x$gamma> 1000)mlab="Lasso"
else if (x$gamma<1.001)mlab="Subset"
else mlab=paste("Gamma =",format(round(x$gamma,1)))
mtext(mlab,3,2)
}
invisible()
}
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