Hi,

I wonder why my attempt to extend an existing loess fit to a new data set is
producing error. I was trying the following:

dat = read.csv(choose.files())
x = dat[,2]; y = dat[,1]
x.sort = sort(x)
y.loess = loess(y~x, span=0.75)

# For testing the above fit with a new dataset:

test = read.csv(choose.files()) # test data
new_x = test [,1]; new_y = test[,2]
new_x.sort = sort(new_x)
predicted <- predict(y.loess, newdata=new_x.sort)

Am I doing any mistake ? Please correct me.

I could see that though the rest of the values of "predicted" looks alright,
however the first output of it is an NA !!

Many thanks,

Chintanu

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