On Tuesday 19 April 2005 02:19, Adam Lyon wrote:
> Hi,
>
> I am trying to do a simple superimposing of two density plots and am
> seeing strange behavior (I haven't seen this reported elsewhere).
> This little snipit will make it apparent...
>
> a = rnorm(10)
> b = rnorm(100, mean=-2, sd=0.5)
> densityplot( ~ a + b)
I'm not sure if this is explicitly documented anywhere (perhaps not),
but the variables in the formula have to have the same length. What you
should really do is
densityplot(~ c(a, b), groups = rep(c('a', 'b'), c(10, 100))
Your usage should have triggered an error; I'll see if I can make that
happen.
Deepayan
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