# [R] R plot split screen in uneven panels

Bert Gunter bgunter@4567 @ending from gm@il@com
Wed Dec 12 17:39:37 CET 2018

```?layout
Please read the Help file **carefully** and work through the **examples**.
I cannot explain better than they.
Here is code using layout() that I think does what you want:

m <- matrix(1:2, nrow =1)
layout(m, widths = c(1,2))
plot(1:10, type = "p",main = "The First Plot")
plot(10:1, type = "l", main ="The Second Plot")

Note that both the lattice package and ggplot2 can also do this sort of
thing much more flexibly(and therefore requiring more effort to learn).

Cheers,
Bert

Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Wed, Dec 12, 2018 at 7:19 AM Luigi Marongiu <marongiu.luigi using gmail.com>
wrote:

> Dear all,
> I would like to draw two plots in the same device so that there is a
> single row and two columns, with the first column being 1/3 of the
> device's width.
> I am creating a PNG object with width = 30 and height = 20 cm.
> I know that I should use split.screen or layout but I am lost with the
> matrix to pass to the functions.
> For istance, I tried:
> # distance in arbitrary units (so let's say cm) from of corners
> # left, right, bottom, and top counting from bottom left corner
> # that is first panel has the bottom right corner 20 cm from the bottom
> left?
> > m = matrix(c(0,20,40,0, 20,60,40,0), byrow=T, ncol=4)
> > m
>      [,1] [,2] [,3] [,4]
> [1,]    0   20   40    0
> [2,]   20   60   40    0
> > split.screen(m)
> Error in par(split.screens[[cur.screen]]) :
>   invalid value specified for graphical parameter "fig"
> > m[1,]
> [1]  0 20 40  0
> > split.screen(m[1,])
> Error in split.screen(m[1, ]) : 'figs' must specify at least one screen
>
> What should be the syntax for this task?
>
> --
> Best regards,
> Luigi
>
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