tkrplot, rgl, sp, geoR, RandomFields, sm
tkrplot, rgl, sp, geoR, RandomFields, akima, MASS, denstrip,
lattice, sm, maps, mgcv
tkrplot, rgl, sp, geoR, RandomFields, akima, MASS, denstrip,
lattice, sm, maps, mgcv, colorspace, ggplot2
tkrplot, rgl, sp, geoR, RandomFields, interp, MASS, denstrip,
lattice, sm, maps, mgcv, colorspace, ggplot2
rgl, sp, geoR, interp, MASS, denstrip, lattice, sm, maps,
mgcv, colorspace, ggplot2, dplyr, scales, tidyr, fields,
ggforce, readr, readxl, sn, testthat (>= 3.0.0)