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How to draw a border around a hatch in R in the same way as a drawer frame

I am trying to get the same effect as highlighting a barcode graph in the same way that R by default isolates a rectangle with a border. In other words, I want the border that appears in the first image below to appear in the second image:

par(mfrow=c(2,1))

## boxplot on a formula:
boxplot(count ~ spray, data = InsectSprays, col = "lightgray")
# *add* notches (somewhat funny here):
boxplot(count ~ spray, data = InsectSprays,
        notch = TRUE, add = TRUE, col = "blue")


require(grDevices) # for colours
tN <- table(Ni <- stats::rpois(100, lambda=5))
r <- barplot(tN, col=rainbow(20))
#- type = "h" plotting *is* 'bar'plot
lines(r, tN, type='h', col='red', lwd=2)
+5
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1 answer

You simply add a box()barcode to the end of your code.

par(mfrow=c(2,1))
boxplot(count ~ spray, data = InsectSprays, col = "lightgray")
boxplot(count ~ spray, data = InsectSprays,
        notch = TRUE, add = TRUE, col = "blue")
require(grDevices) # for colours
tN <- table(Ni <- stats::rpois(100, lambda=5))
r <- barplot(tN, col=rainbow(20))
box()
lines(r, tN, type='h', col='red', lwd=2)
+8
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