[R] Jump between figures in multifigure environment

[Naresh Gurbuxani]

After drawing multiple figures, I want to select an earlier figure to add some low level commands.  Using mfg parameter runs all commands in the most recent figure only.  How can an earlier figure be selected?

Thanks,
Naresh

par(mfrow = c(2, 2))
for (i in 1:4) plot(c(0, 1), c(0, 1), type = "n”)
for (i in 1:2) {for (j in 1:2) text(0.5, 0.5, labels = paste("(", i, ",", j, ")"), mfg = c(i, j, 2, 2))}
#All text is in bottom right figure only