[R] ggplot 2 semi-transparency error

[Chris Friedl]

I really don't know anything much about this but I tried "device=pdf"
(no-quotes) and I got a pdf file with transparent plots.

?device.print gives help with some links to other devices

hth


rajesh j wrote:
> 
> Hi,
> I used the command ggplot as follows...
> p<-ggplot(a,aes(x=a$V1,colour=a$V2,fill=a$V2))
> p +  geom_density(alpha = 0.2,xlim=c(-10,10),ylim=c(0,0.5))
> 
> when I say,
> dev.print(device=postscript,file="/alpha/dct.pdf")
> I get
> 
> Warning message:
> In grid.Call.graphics("L_polygon", x$x, x$y,
> list(as.integer(1L:length(x$x)))) :
>   semi-transparency is not supported on this device: reported only once
> per
> page
> 
> the pdf has error
> any help?
> -- 
> Rajesh.J
> 
> 	[[alternative HTML version deleted]]
> 
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