https://github.com/cran/fields
Tip revision: 8eab500c3dad2103092ff68706417414fe53e16b authored by Doug Nychka on 22 September 2009, 20:23:49 UTC
version 6.01
version 6.01
Tip revision: 8eab500
make.surface.grid.R
# fields, Tools for spatial data
# Copyright 2004-2007, Institute for Mathematics Applied Geosciences
# University Corporation for Atmospheric Research
# Licensed under the GPL -- www.gpl.org/licenses/gpl.html
"make.surface.grid" <- function(grid.list) {
#
# the old fields version of make.surface.grid was complicated
# and we believe rarely used.
# this current function
# is essentially a single line replacement
#
# but adds an attribute for the grid matrix to carry
# and carries along the names of the grid.list variables.
# along the information as to how it was created.
# see as.surface
temp <- as.matrix(expand.grid(grid.list))
# wipe out row names
dimnames(temp) <- list(NULL, names(grid.list))
# set attribute
attr(temp, "grid.list") <- grid.list
temp
}