[R] Fixed legend in vcd/mosaicplot

[Uwe Ligges]

Dieter Menne wrote:

> Hello, friends of mosaicplot,
> 
> I want to attach a fixed legend to mosaicplot, e.g. -3..3 independently of
> the data in the graphics. This must be hidden somehow in shading/legend, but
> I could not get the right handle to it.
> 
> Dieter
> 
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Example:

   plot(1:10)
   legend(par("usr")[2], par("usr")[4],
          legend="Example", pch=1, xjust=1)

Uwe Ligges