lgcpgrid(grid, ...)lgcpgrid objects are list objects with names len, nrow, ncol, grid, xvals, yvals, zvals. The first three elements of the list store the dimension of the object, the fourth element, grid, is itself a list object consisting of matrices in which the data is stored. The last three arguments can be used to give what is effectively a 3 dimensional array a physical reference.
For example, the mean of Y from a call to lgcpPredict, obj$y.mean for example, is stored in an lgcpgrid object. If several time points have been stored in the call to lgcpPredict, then the grid element of the lgcpgrid object contains the output for each of the time points in succession. So the first element, obj$y.mean$grid[[1]],contains the output from the first time point and so on.