[R] different colors for two wireframes in same plot

[Frede Aakmann Tøgersen]

You can obtain some transparency setting the alpha transparency. This is device dependent though. Using the pdf device you can do this obtaining transparency of both surfaces (the version must be at least 1.4 for semitransparent output to be understood):


pdf("test.pdf",version="1.4")
wireframe(z ~ x * y, data = g, groups = gr,
          scales = list(arrows = FALSE),
          drape = TRUE, colorkey = TRUE,
          screen = list(z = 30, x = -60),
          par.settings = list(regions=list(alpha=0.75)))
dev.off()

See ?wireframe for the "at, col.regions, alpha.regions" arguments.

Does this suffice?


Med venlig hilsen
Frede Aakmann Tøgersen
 

 

> -----Oprindelig meddelelse-----
> Fra: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] På vegne af marcg
> Sendt: 27. september 2007 09:22
> Til: r-help at stat.math.ethz.ch
> Emne: [R] different colors for two wireframes in same plot
> 
> Hello R,
> 
> According to:
> 
> g <- expand.grid(x = 1:10, y = 5:15, gr = 1:2) g$z <- 
> log((g$x^g$g + g$y^2) * g$gr) wireframe(z ~ x * y, data = g, 
> groups = gr,
>           scales = list(arrows = FALSE),
>           drape = TRUE, colorkey = TRUE,
>           screen = list(z = 30, x = -60))
> 
> i have two wireframes in one plot.
> 
> How could i change the color of the top - one to transparent 
> (or only the grid). I want to give insight to the lower layer.
> 
> Could one make an if-statment like (if gr==1 do drape=F or 
> color=none) if gr=2 do drape=T, colorkey=T)
> 
> Thanks for your help
> 
> Marc
> 
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