Multiple plots in R on one page using par(pin) result in wasted space -

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i want plot several plots in r, 24 in 1 page. furthermore, want plots have rectangular form. when use:

par(mfrow = c(6,4),pin = c(2,1))

i plot massive white space wasted, @ bottom , top of plots. if try reduce outer margin of plots using: 

par(mfrow = c(6,4),pin = c(2,1), oma = c(0,0,0,0))

the result same.

you can control margins, have tried this: 

    layout(matrix(c(1:24), nrow = 6, byrow = t));par(mfrow = c(6,4),pin = c(2,1), oma = c(0,0,0,0)); (i in 1:24) { plot(rnorm(100), main = sprintf("%do gráfico", i)) }

enter image description here


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