[R] how can I get a layout like in pairs()?

[Lukas Kohl]

dear R gurus,

I repeatedly run into this problem, maybe there's an easy way to solve it.

I want a composite plot with multiple graphs that share the same axis,
similar way as done by the pairs() (eg. like this here
http://www.r-project.org/screenshots/iris-pairs.jpg). all plot panels
shall have the same size, but there need to be extra space at the
outside of the whole graphic to label the axis. space between the
panels should be minimal.

I tried to set par(mar) to low levels, and add additional space with
par(oma) for axis&tick labels, however, the individual plots can't
draw into the oma space - is there an alternative way?

thanks a lot,
 lukas

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