Sets output functionality for lgcpPredict via the main functions dump2dir and MonteCarloAverage. Note that it is possible for
the user to create their own gridfunction
and gridmeans
schemes.
setoutput(gridfunction = NULL, gridmeans = NULL)
what to do with the latent field, but default this set to nothing, but could save output to a directory, see ?dump2dir
list of Monte Carlo averages to compute, see ?MonteCarloAverage
output parameters