add.stats <- function(xypos,data,dstat=T,ceff=F,rmse=T,rrmse=F,cex=1){
if(dstat){
if(exists('lgd')){
lgd = c(lgd,paste('D: ',dstat(data),sep=''))
}else{
lgd = paste('D: ',dstat(data),sep='')
}
}
if(ceff){
if(exists('lgd')){
lgd = c(lgd,parse(text=paste('C[eff]: ',ceff(data),sep='')))
}else{
lgd = parse(text=paste('C[eff]: ',ceff(data),sep=''))
}
}
if(rmse){
if(exists('lgd')){
lgd = c(lgd,paste('RMSE: ',signif(rmse(data),digits=2),sep=''))
}else{
lgd = paste('RMSE: ',signif(rmse(data),digits=2),sep='')
}
}
if(rrmse){
if(exists('lgd')){
lgd = c(lgd,paste('RRMSE: ',signif(rrmse(data),digits=2),sep=''))
}else{
lgd = paste('RRMSE: ',signif(rrmse(data),digits=2),sep='')
}
}
legend(x=xypos$x,y=xypos$y,xjust=xypos$xjust,yjust=xypos$yjust,
legend=lgd,cex=cex,bty='n')
}
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