Plot Gaussian Process with functional mean for training or predicting with 'gpfr' class object.
# S3 method for gpfr
plot(x,...,type=c('raw','fitted','prediction'))The 'gpr' object from either training or predicting of the Gaussian Process.
Other arguments from general 'plot' function, such as: 'axes', etc.
Function provides three types of plots: raw, fitted and prediction.