How about : google "r graph gallery 4d" ?

abs

On Sun, Oct 4, 2009 at 3:31 PM, Duncan Murdoch <murdoch@stats.uwo.ca> wrote:

> On 04/10/2009 3:14 PM, gcheer3 wrote:
>
>> Suppose there are 4 variables
>> d is a function of a , b and c
>> I want to know how a, b and c change will make d change
>> It will be straightforward to see it if we can graph the d surface
>>
>> if d is only a function of a and b, I can use 'persp' to see the surface
>> of
>> d. I can easily see at what values of a and b, d will get the maxium or
>> minium or multiple modes, etc
>>
>> But for 4 dimention graph, is there a way to show the surface of d
>> Will use color help
>>
>
> contour3d in the misc3d package can do something like that.
>
> Duncan Murdoch
>
>
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