grid {SpherWave} | R Documentation |
produces grid points by G"{o}ttlemann's method, modified G"{o}ttlemann's method or standard method.
modreggrid(l) # for modified G\"{o}ttlemann's regular grid modredgrid(l) # for modified G\"{o}ttlemann's reduced grid gotreggrid(l) # for G\"{o}ttlemann's regular grid gotredgrid(l) # for G\"{o}ttlemann's reduced grid reggrid(l) # for standard regular grid redgrid(l) # for standard reduced grid
l |
levels |
This function generates the grid points on globe.
grid |
grid points |
Oh, H-S. (1999) Spherical wavelets and their statistical analysis with applications to meteorological data. Ph.D. Thesis, Department of Statistics, Texas A&M University, College Station.
rec.reg <- reggrid(3)$grid rec.red <- redgrid(3)$grid mod.reg <- modreggrid(3)$grid mod.red <- modredgrid(3)$grid got.reg <- gotreggrid(2)$grid got.red <- gotredgrid(2)$grid par(mfrow = c(3, 2), mar = c(2.1, 4.1, 4.1, 1.1)) world() points(rec.reg[, 2], rec.reg[, 1], cex = 0.7) title(main = "(a)") world() points(rec.red[, 2], rec.red[, 1], cex = 0.7) title(main="(b)") world() points(mod.reg[, 2], mod.reg[, 1], cex = 0.7) title(main = "(c)") world() points(mod.red[, 2], mod.red[, 1], cex = 0.7) title(main = "(d)") world() points(got.reg[, 2], got.reg[, 1], cex = 0.7) title(main = "(e)") world() points(got.red[, 2], got.red[, 1], cex = 0.7) title(main = "(f)")