[R] ggplot - plot with only legend?

From: Pedro de Barros <pbarros_at_ualg.pt>
Date: Thu, 10 Apr 2008 15:17:31 +0100

Dear R'ers,

I am trying to build a composite plot (with several plots in one figure). I have tried, but I cannot use facetting, as I need to customize each plot using grid.
Since all the plots are the same (with different data, but same layout and categories), I would like to have only one legend, that I would place in its own viewport, below all the other plots. My questions are
(a) is there is a way, in ggplot, to build a plot that is only the
legend (no data), where the legend occupies the whole viewport;
(b) How can I change the layout of the legend (e.g. have them written
side-by side, instead of over each other).

Thanks in advance,

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