I'm new to R (and math ;) Would somebody please be so kind as to direct me in plotting a 3D sphere?
I tried something in the lines of:
####
y <- x <- seq(-pi, pi, length=pi*10)
f <- function(x,y)
{
z <- sqrt(pi - x^2 - y^2)
#z[is.na(z)] <- 0
z
}
z <- outer(x, y, f)persp(x, y, z, theta = 120, phi = 30) ####
I've also tried: .... make.surface.grid(...) .. persp( as.surface( grid, z) ) ... with the same result: 'Incomplete' demi sphere and others..
Any suggestions/solutions would be appreaciated.
Regards, Derick
PS:Merry X-mas ;)
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