[R] White lines on persp plots in pdf format

[Miguel Lacerda]

Hi,

I am using the persp function to plot 3D surfaces, but the plots have
"little white lines" when I print them to a pdf file (visible in
Acrobat, Foxit, Evince, Xpdf and Gimp). This does not happen when I
create png or tiff images. Here is some sample code:

pdf("test.pdf")

x <- seq(0,1,length=101)

f <- dnorm(x, 0, 0.25)

z <- c()

for(i in 1:100) z <- cbind(z,f)

persp(z, col="red",theta=40, phi=10, shade=1.5, d=4, border=NA)

dev.off()

The resulting graph is attached. Anyone know how to get rid of the
"little white lines"?

Thanks!
Miguel
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