R-beta: mfg weirdness

[Bill Simpson]

It seems there are problems with mfg, both the old version .61.2 and the
snapshot .62.

> x<-rnorm(100)
> y<-rnorm(100)
> y1<-x/y
> x11()            
> par(mfcol=c(2,1))
> par(mai=c(.6,.6,.2,.2))
> plot(x,y,mfg=c(2,1,2,1))
I'm not sure if 2,1 is considered the top or the bottom position on the
page, but whether you say mfg=c(2,1,2,1) or mfg=c(1,1,2,1), the first plot
is always drawn at the top position.
> plot(x,y,mfg=c(2,1,2,1))
Now the second plot is drawn at the bottom position.  Again, the mfg
argument has no effect. The second plot is always at the bottom
> plot(x,y1,mfg=c(2,1,2,1))
Now the whole figure is cleared and a single plot appears at the top.

Further plots alternate in position in this way, independent of mfg.

Bill Simpson

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