Nothing
"plot.spa" <-
function(x,xscale=NULL,g=NULL,vars=1:2,graph.grid=TRUE,plt.response,lcol=8,llwd=1,...){
if(class(x)!="spa"){
stop("Error: `x' is not of type spa")
}
type=x$type
y<-x$model$y
lattice=FALSE
control=x$control
if(length(vars)>2){
warning("To many varaibles set with vars ... only using first 2")
vars<-vars[1:2]
}
if(is.null(g)){
stop("Error: must input a graph for the plot function")
}
if( x$control$dissimilar)
g<-apply(is.finite(g),1,as.numeric)
n<-x$model$dims[1]
m<-x$model$dims[2]
##if(missing(xlim) & missing(ylim))
plot(xscale[,vars],type="n",...)
if(graph.grid){
for(i in 1:n){
ind<-which(g[,i]>0)
piv1<-xscale[i,vars[1]]
piv2<-xscale[i,vars[2]]
for(j in 1:length(ind)){
lines(c(piv1,xscale[ind[j],vars[1]]),c(piv2,xscale[ind[j],vars[2]]),col=lcol,lwd=llwd)
}
}
}
L=x$model$L
y=as.numeric(x$model$y)
points(xscale,cex=0.7,pch=16)
if(nlevels(as.factor(y))==2 & plt.response){
y=as.numeric(as.factor(y))
points(xscale[c(L),vars],col=gray(c(0.2,0.8))[y],cex=2,pch=16)
points(xscale[c(L),vars],col=1,cex=2,pch=1)
}
box()
}
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