Usage
GSIF.env(wps.server = "http://wps.worldgrids.org",
ref_CRS = "+proj=longlat +datum=WGS84",
NAflag = -99999,
license_url = "http://creativecommons.org/licenses/by/3.0/",
project_url = "http://gsif.r-forge.r-project.org/",
stdepths = c(-2.5, -10, -22.5, -45, -80, -150)/100,
stsize = c(5, 10, 15, 30, 40, 100)/100,
cellsize = rev(c(6/120, 3/120, 1/120, 1/240, 1/600, 1/1200, 1/3600)),
show.env = TRUE)