halftoner-package: Produce halftone figures using R!
In cmarcum/halftoner: Produce halftone figures using R!

Halftone is a reprographic technique that uses various sized and spaced dots to represent continuous tone gradients. It is the basis of color offset printing and predominantly used in CMYK colorspace applications.

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Christopher Steven Marcum

Maintainer: Christopher Steven Marcum <cmarcum@uci.edu>

data(calfs)
plot(halftone(calfs))

plot(halftone(calfs,channel=1),pch=19,col="red")
points(halftone(calfs,channel=2),pch=19,col="green")
points(halftone(calfs,channel=3),pch=19,col="blue")

plot(halftone(apply(calfs,1:2,mean),x.samp=90,y.samp=90),pch="\u2605",col="red")
points(halftone(apply(calfs,1:2,mean),deg=-5),pch="\u2605",col="blue")