search for: test_alpha

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2006 Nov 14
1
alphachannel on pdf-device
Dear R users, since R-2.4.0 I am not able any more to draw figures without transparency after drawing one figure with alphachannel set lower than 100%. For better unterstanding here a small example of my problem: ----------------------------------------------- pdf(paste("test_alpha_rgb.pdf",sep=""), version="1.4") plot(1:8, 1:8, type="n", xlab="", ylab="") lines(c(1,8), c(1,8), type="l", col="lightblue", lwd=15) # polygon with alphachannel=64 (transparency 40%) polygon(c(5,2,2,5,5), c(2,2,5,5,2), co...