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    • This example code comes from section 3.4.3 "Annotating the margins" in Paul Murrell's "R Graphics" book --- Figure 3.19
y1 <- rnorm(100) y2 <- rnorm(100)

par(mfrow = c(2, 1), xpd = NA) # First figure plot(y1, type = "l", axes = FALSE, xlab = "", ylab = "", main = "") box(col = "grey") mtext("Left end of margin", adj = 0, side = 3) lines(x = c(20, 20, 40, 40), y = c(-7, max(y1), max(y1), -7), lwd = 3, col = "grey") # Second figure plot(y2, type = "l", axes = FALSE, xlab = "", ylab = "", main = "") box(col = "grey") mtext("Right end of margin", adj = 0, side = 3) mtext("Label below x = 30", at = 30, side = 1) lines(x = c(20, 20, 40, 40), y = c(7, min(y2), min(y2), 7), lwd = 3, col = "grey")
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Topic revision: r1 - 08 Nov 2006, TheresaScott
 

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