R help - Mar 2003 - Three graphs

Hi R-users:
How can I obtain 3 graphics in a page but, one on the top and centered, and
the other two in the bottom ?

Thank you for your help

-- 
Kenneth Roy Cabrera Torres
Celular +57 (315) 405 9339

Kenneth Cabrera wrote:
> How can I obtain 3 graphics in a page but, one on the top and centered, and
> the other two in the bottom ?
?par
but probably R-intro is what you need

Cheers

Michael

-- 
Michael T. Mader
Institute for Bioinformatics/MIPS, GSF
Ingolstaedter Landstrasse 1
D-80937 Neuherberg
0049-89-3187-3576
 
In statistics, some people worry about not seeing the forest for the
trees.
I like to look at the bark. (C. R. Blyth, 1967)

On Mon, 2003-03-31 at 13:25, Michael Mader wrote:
> Kenneth Cabrera wrote:
> 
> > How can I obtain 3 graphics in a page but, one on the top and
centered, and
> > the other two in the bottom ?
> ?par
> but probably R-intro is what you need
In this case, I think layout() is required:

layout(mat = matrix(c(1,1,2,3), 2, 2, byrow=TRUE))
layout.show(3)

Or, if you want all three graphics to have the same width:

layout(mat = matrix(c(0,1,1,0,2,2,3,3), nrow=2, ncol=4, byrow=TRUE))
layout.show(3)

Martyn

On 31 Mar 2003 at 6:00, Kenneth Cabrera wrote:

There are multiple ways to do this, see

?layout
?split.screen

split.screen seems to be the best for what you ask. But, split.screen
seems to be broken in rw1062, so the following example is from R-
devel (1.7 to be), on windows:
> par(bg="white")
> split.screen( matrix( c(0, 0.3, 0.5, 1, 0.3, 0.7, 0.5, 1, 
+                         0.7, 1, 0.5, 1, 0, 0.5, 0, 0.5, 
+                         0.5, 1, 0, 0.5), 5, 4, byrow=TRUE))
[1] 1 2 3 4 5
> screen(2)
> plot(1:10, 1:10)
> screen(4)
> plot(1:10, 1:10)
> screen(5)
> plot(1:10, 1:10)
> close.screen(all=TRUE)
I defines two plots not to be used, to qchieve the centering of the 
upper plot. (That might not be necessary, try). 

By the way, the help page for split.screen is a bit cryptic, it says

figs A two-element vector describing the number of rows and the 
number of columns in a screen matrix or a matrix with 4 columns. If a 
matrix, then each row describes a screen with values for the left, 
right, bottom, and top of the screen (in that order) in NDC units. 

without explaining what is NCD units. help.search("NCD")
doesn''t
help, and NDC is not in the index of either MASS4 or ''S
Programming''.

But MASS4 (page 78) has a better explanation, can that be 
incorporated into the help page?

Kjetil Halvorsen



> Hi R-users:
> How can I obtain 3 graphics in a page but, one on the top and centered, and
> the other two in the bottom ?
> 
> Thank you for your help
> 
> -- 
> Kenneth Roy Cabrera Torres
> Celular +57 (315) 405 9339
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help