R help - Mar 2005 - Multi-plot figures with different numbers of plots in different rows

Dear all, 

I have 5 plots that I would like to include in a single figure, spread over two
rows. If I use mfrow=c(2,3), and produce my plots one after the other, I will
end up with three plots in the first row, and 2 in the second row, which is what
I want. However, I would like the two plots in the second row to be moved to the
centre of that row, rather than occupying the two left-most cells.

I have also considered using split.screen, but this would mean that the plots in
the lower half would be wider than in the upper half, whereas I want them all to
be of the same size.

Thanks in advance for any suggestions on how this can be done.

Stephane


--------------------------------------------------------------------------------------
Mr Stephane Hess
Centre for Transport Studies
Imperial College London
--------------------------------------------------------------------------------------


	[[alternative HTML version deleted]]

On Sat, 2005-03-26 at 17:44 +0000, Hess, Stephane wrote:
> Dear all, 
> 
> I have 5 plots that I would like to include in a single figure, spread over
two rows. If I use mfrow=c(2,3), and produce my plots one after the other, I
will end up with three plots in the first row, and 2 in the second row, which is
what I want. However, I would like the two plots in the second row to be moved
to the centre of that row, rather than occupying the two left-most cells.
> 
> I have also considered using split.screen, but this would mean that the
plots in the lower half would be wider than in the upper half, whereas I want
them all to be of the same size.
> 
> Thanks in advance for any suggestions on how this can be done.
There is a book called `Gr?ficos Estad?sticos con R' under "contributed
documentation" in the main R website. It should prove useful. The book
is in spanish, but as it is a "graphical" manual, it should not matter
much. If in troubles email me privately.

Cheers,

Federico 

-- 
Federico C. F. Calboli
Department of Epidemiology and Public Health
Imperial College, St Mary's Campus
Norfolk Place, London W2 1PG

Tel  +44 (0)20 7594 1602     Fax (+44) 020 7594 3193

f.calboli [.a.t] imperial.ac.uk
f.calboli [.a.t] gmail.com

On Sat, 26 Mar 2005, Hess, Stephane wrote:

HS > Dear all, 
HS > 
HS > I have 5 plots that I would like to include in a single figure, spread
over two rows. If I use mfrow=c(2,3), and produce my plots one after the other,
I will end up with three plots in the first row, and 2 in the second row, which
is what I want. However, I would like the two plots in the second row to be
moved to the centre of that row, rather than occupying the two left-most cells.
HS > 
HS > I have also considered using split.screen, but this would mean that the
plots in the lower half would be wider than in the upper half, whereas I want
them all to be of the same size.
HS > 
HS > Thanks in advance for any suggestions on how this can be done.
HS > 
HS > Stephane
HS > 
HS > 
HS >
--------------------------------------------------------------------------------------
HS > Mr Stephane Hess
HS > Centre for Transport Studies
HS > Imperial College London
HS >
--------------------------------------------------------------------------------------


Here is a brute force way:

par(mfrow=c(2,3)) #set up 2 rows x 3 colums
plot(1:10) #plot 1
plot(1:10) #plot 2
plot(1:10) #plot 3
par(mfg=c(2,2))  # start next plot at 2,2 instead of 2,1
 plot(1:10)       # 4th plot

Hi


Hess, Stephane wrote:
 > Dear all,
 >
 > I have 5 plots that I would like to include in a single figure,
 > spread over two rows. If I use mfrow=c(2,3), and produce my plots one
 > after the other, I will end up with three plots in the first row, and
 > 2 in the second row, which is what I want. However, I would like the
 > two plots in the second row to be moved to the centre of that row,
 > rather than occupying the two left-most cells.
 >
 > I have also considered using split.screen, but this would mean that
 > the plots in the lower half would be wider than in the upper half,
 > whereas I want them all to be of the same size.


Something like ...?

layout(rbind(c(1, 1, 2, 2, 3, 3),
              c(0, 4, 4, 5, 5, 0)))
for (i in 1:5) {
   plot(i, type="n")
   text(1, i, paste("Plot", i), cex=4)
}

Paul
-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/