[R] multiple plots in R

[Suyan Tian]

Hi, I just try to draw multiple plots in one page using R, I used par  
command. For example I have 7 plots, but instead of arranging them in  
the default way

plot1    plot2  plot3
plot4   plot5   plot6
plot7

I want them in this order
plot1   plot2  plot3
plot4   plot5  plot6
             plot7

Could somebody tell me how to do this, please? Thanks so many.


Suyan