How to write an R function that displays plots sequentially?

Question

I want something similar to the 'plot.lm' functionality.

y <- rnorm(100, 0, 1)
x <- rnorm(100, 0, 1.5)

mod <- lm(y ~ x)

plot(mod)

Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
Hit <Return> to see next plot:

I want to create several plots and then display them sequentially - prompting the user to hit in order to see all the plots.

score 10 · Accepted Answer · answered Jan 31 '15 at 21:14

10

Just set par(ask=TRUE) before calling plot(). You might want to set it after your first plot, so the user doesn't have to wait for that one. To be nice, set par(ask=FALSE) after your last plot.

answered Jan 31 '15 at 21:14

Jthorpe

9,756
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5

The last sentence is *super important*. The best way to do it is to save the old par, and re-set it automatically using `on.exit`: `oldpar = par(ask = TRUE); on.exit(par(oldpar))`. – Konrad Rudolph Jan 31 '15 at 22:20

score 1 · Answer 2 · answered Jan 25 '20 at 20:10

1

A simpler solution for this that I've found is what plot.lm() does somewhere in the beginning of the function:

oask <- devAskNewPage(TRUE);
on.exit(devAskNewPage(oask));

answered Jan 25 '20 at 20:10

Ivan Svetunkov

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1
4

How to write an R function that displays plots sequentially?

2 Answers2