🚀 go-pugleaf

Let f(x,y) be a function of x and y that I want to plot in 3-d as
with the persp() function.

Without loss of generality suppose that x and y both range from
0 to 1.

In order to use the persp() function to plot f I need to create a 
matrix z where 

z[i,j]<-f(x[i],y[j])

(do I understand this correctly?)

Now my question is:  Is there a simple straightforward vector or matrix
like statement I can use to create z given an arbitrary f,
or do I need to use a double "for loop" which I consider to be akward 
and slow?

--David C. Adams  Statistician  Cray Research Inc.  dadams@cray.com
__________________________________________________________________
Did you know that most americans eat over a ton of dirt every day?