Hi, and thanks in advance for any assistance,

I'm new to R and to this mailing list, and am having trouble with the *
persp()* function. I've got a matrix (z) of values for various combinations
of x and y, each of which is a set of (0, 5, 10, 15, 20). But when I try *
persp(x,y,z)*, I get an "*invalid z argument*" error, and when I try simply
*persp(z)*, R returns an "*invalid x argument*" error, along with warning
messages. It seems like a very simple problem, so excuse my ignorance, but
any help would be greatly appreciated. Below is the printout from the
console.

Many thanks,

john
--------------------------------------------------------

*> x*
*[1]  0  5 10 15 20*
*
*
*> y*
*[1]  0  5 10 15 20*
*
*
*> z*
*     [,1]  [,2]   [,3]   [,4]   [,5]  *
*[1,] 4.538 9.169  23.518 32.794 39.322*
*[2,] 5.013 13.104 33.282 42.202 45.474*
*[3,] 5.296 17.728 36.989 43.89  46.57 *
*[4,] 5.366 20.94  39.244 44.987 47.177*
*[5,] 5.642 23.396 40.842 45.489 47.126*
*
*
*> persp(x,y,z)*
*Error in persp.default(x, y, z) : invalid 'z' argument*
*
*
*> persp(z)*
*Error in persp.default(z) : invalid 'x' argument*
*In addition: Warning messages:*
*1: In min(x, na.rm = na.rm) :*
*  no non-missing arguments to min; returning Inf*
*2: In max(x, na.rm = na.rm) :*
*  no non-missing arguments to max; returning -Inf*
*3: In min(x, na.rm = na.rm) :*
*  no non-missing arguments to min; returning Inf*
*4: In max(x, na.rm = na.rm) :*
*  no non-missing arguments to max; returning -Inf*
*5: In min(x, na.rm = na.rm) :*
*  no non-missing arguments to min; returning Inf*
*6: In max(x, na.rm = na.rm) :*
*  no non-missing arguments to max; returning -Inf*

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