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wantala
2008 Nov 16
1
Fw: alpha transparency crashes R
...nor 8.0
year 2008
month 10
day 20
svn rev 46754
language R
version.string R version 2.8.0 (2008-10-20)
The following small example program when run with n large enough
(e.g., n=1000) and transparency will crash R...
alphaBomb.r = function(n=100, wantAlpha=T) {
df = data.frame(a=rnorm(n),b=runif(n))
if(wantAlpha)
alpha=runif(n)
else
alpha = 1
j = xyplot(b~a, df, alpha=alpha, pch=19)
print(j)
trellis.device('pdf',file='alphaBomb.pdf',version='1.4')
print(j)
dev.off()
}
Please note that the cra...