# NOT RUN {
data(characterI)
par(mfrow = c(1,2))
matplot(y = characterI[,,1],
type ="l",col = "black", lty = 1, xlab = "Time", ylab="X position of the pen")
matplot(y = characterI[,,2],
type ="l",col = "black", lty = 1, xlab = "Time", ylab="Y position of the pen")
par(mfrow = c(1,1))
# }
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