I'm not sure it's currently possible with ggplot2 (lattice and
latticeExtra offer some workarounds for this).
Perhaps you can try this,
http://wiki.r-project.org/rwiki/doku.php?id=tips:graphics-ggplot2:sharelegend
(neater here: )
http://learnr.wordpress.com/2009/05/26/ggplot2-two-or-more-plots-sharing-the-same-legend/
except that in your case you'd have to place several legends.
HTH,
baptiste
On 1 Jun 2009, at 08:19, Zeljko Vrba wrote:
I have three plots and I want the *plot area* to be of the same
width on
each plot. Since the three plots have different legends, the text
width
of the legend affects the width of the plot area (longer legend text =
narrower plot area). Exporting the three figures to postscript device
of same size gives thus unequal plot areas. How can I calculate the
correct width of postscript device for each figure, so that plot areas
will be equally wide?
Is there a better alternative?
(I tried to place the legend inside the plot area, which kinda
works, but
the problem is that legend.position is relative to the *device*, not
to
the *plot area*, so I don' know how to align the legend with plot
border.)
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