Dear Uwe Ligges ,
I still can't finish it.
*> aa* #my data
x1 x2 y
5 0.05 6 4.4180
1 0.50 3 2.6979
4 0.50 9 2.9000
7 0.95 6 2.6230
8 0.95 6 2.9078
9 0.95 6 2.6727
3 1.40 3 2.4203
2 1.40 9 2.5329
6 1.85 6 2.4867
*> attach(aa)*
*> persp(x1,x2,y*
error in persp.default(x1, x2, y) : increasing 'x' and 'y' values expected
*> contour(x1,x2,y)*
error in contour.default(x1, x2, y) : increasing 'x' and 'y' values expected
What's the problem? And could u recommend a book for me?
Thanks again.
On 11/7/06, Uwe Ligges <[EMAIL PROTECTED]> wrote:
>
>
>
> zhijie zhang wrote:
> > Dear Rusers,
> > I want to know which function in R can perform the following tasks:
> > 1.surface-data grid(x,y,z) #which could be done in splus, the name was
> from
> > splus's options of graph
> > 2. contourplot(x,y,z) #which could be done in splus
> > By the way, where can i find some useful materials to learn to plot
> > 3-dimensionel graphs?
> > Thanks!
> >
>
> 1. persp()
> 2. contour()
> 3. E.g., look into a good book about R.
>
> Uwe Ligges
>
--
With Kind Regards,
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Zhi Jie,Zhang ,PHD
Tel:86-21-54237149 [EMAIL PROTECTED]
Dept. of Epidemiology,school of public health,Fudan University
Address:No. 138 Yi Xue Yuan Road,Shanghai,China
Postcode:200032
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