On Mon, 8 Sep 2008, Li, Xiaochun wrote:
Dear List,
If I use the following code to generate a pdf,
pdf(filename)
image(x, y, !is.na(z), col=c("green","black"))
dev.off()
Can someone extract the 0-1 data (that is, is.na(z)) from the Adobe source?
Yes (from the PDF file, which is not due to Adobe but R). Indeed, a PDF
viewer has to do that to show you the image. In fact given the way R's
pdf driver works it is rather easy to do.
Thank you.
Xiaochun
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