test par('page') which will be available in R 3.0.2

par_page.R

stopifnot(getRversion() > '3.0.1')

par("page")
dev.off()

dev.new()

par("page")
plot(1)
par("page")
plot(2)
par("page")

par(mfrow=c(1, 2))
par("page")
plot(1)
par("page")
plot(2)
par("page")

plot(3)
par("page")

layout(matrix(c(1, 2, 1, 3, 4, 4), 3, 2, byrow=TRUE))
par("page")
plot(1)
par("page")
plot(2)
par("page")
plot(3)
par("page")
plot(4)
par("page")
plot(5)
par("page")

layout(matrix(c(1, 2, 1, 3, 4, 4), 3, 2, byrow=TRUE))
par("page")
plot(1)
par("page")
plot(2)
par("page")
dev.off()

dev.new()
setHook("before.plot.new", function() print(par("page")))

pairs(iris)
par("page")
coplot(lat ~ long | depth, data = quakes)
coplot(lat ~ long | depth * mag, data = quakes)
for(i in 1:2) fourfoldplot(UCBAdmissions)
par("page")
filled.contour(volcano)
par("page")

setHook("before.plot.new", NULL, "replace")

par_page.Rout

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Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: x86_64-unknown-linux-gnu (64-bit)

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Type 'license()' or 'licence()' for distribution details.

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Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

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'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> stopifnot(getRversion() > '3.0.1')
> 
> par("page")
[1] TRUE
> dev.off()
null device 
          1 
> 
> dev.new()
dev.new(): using pdf(file="Rplots6.pdf")
> 
> par("page")
[1] TRUE
> plot(1)
> par("page")
[1] TRUE
> plot(2)
> par("page")
[1] TRUE
> 
> par(mfrow=c(1, 2))
> par("page")
[1] TRUE
> plot(1)
> par("page")
[1] FALSE
> plot(2)
> par("page")
[1] TRUE
> 
> plot(3)
> par("page")
[1] FALSE
> 
> layout(matrix(c(1, 2, 1, 3, 4, 4), 3, 2, byrow=TRUE))
> par("page")
[1] TRUE
> plot(1)
> par("page")
[1] FALSE
> plot(2)
> par("page")
[1] FALSE
> plot(3)
> par("page")
[1] FALSE
> plot(4)
> par("page")
[1] TRUE
> plot(5)
> par("page")
[1] FALSE
> 
> layout(matrix(c(1, 2, 1, 3, 4, 4), 3, 2, byrow=TRUE))
> par("page")
[1] TRUE
> plot(1)
> par("page")
[1] FALSE
> plot(2)
> par("page")
[1] FALSE
> dev.off()
null device 
          1 
> 
> dev.new()
dev.new(): using pdf(file="Rplots7.pdf")
> setHook("before.plot.new", function() print(par("page")))
> 
> pairs(iris)
[1] TRUE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
> par("page")
[1] TRUE
> coplot(lat ~ long | depth, data = quakes)
[1] TRUE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
> coplot(lat ~ long | depth * mag, data = quakes)
[1] TRUE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE
> for(i in 1:2) fourfoldplot(UCBAdmissions)
[1] TRUE
[1] TRUE
> par("page")
[1] TRUE
> filled.contour(volcano)
[1] TRUE
[1] FALSE
> par("page")
[1] TRUE
> 
> setHook("before.plot.new", NULL, "replace")