Thank you so much. It worked!
Bests!
Xiang Gang

Uwe Ligges <ligges@statistik.uni-dortmund.de> wrote: 

a hk wrote:
> Hi, everyone,
> I am green with R. Now I am working on a graphics projects.
> I have a dataset:
> -----------------------
>      a    b        c
> 1  228  83     6.69 
> 2  274  83     7.36 
> 3  320  83     8.86 
> 4  366  83     7.36 
> 5  412  83     6.81 
> 6  228 129     5.58
> 
> ---------------------
> I want to draw a 3d graphic.
> I use the code
> __________________
>  scatterplot3d(avs$a,avs$b,avs$emprical,type="h",angle=35,scale.y=0.7,pch=16,
> + y.ticklabs(0,500,by=100),y.margin.add=0.1)


The code is incorrect, hence here a similar example:

library(scatterplot3d)
s3d <- scatterplot3d(avs$a, avs$b, avs$c, type="h",
                      angle=35, scale.y=0.7, pch=16,
                      y.margin.add=0.1)

polygon(s3d$xyz.convert(x = c(250, 400, 400, 250),
                         y = c(90, 90, 120, 120),
                         z = c(7, 7, 7, 7)))


Uwe Ligges



> _________________________________
> 
> Now I want to add a rectangle on the x,y axis, does anyone could tell me the code? I try a lot, but don't find.
> and another question, how do I revoke the "point3d" function?
> Thank you so much.
> 
> XiangGang
> 
> 
>        
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