[R] How to generate a figure using par( ) with some densityplot( )'s

[Sundar Dorai-Raj]

Deepayan Sarkar wrote:
> On 6/26/06, Sundar Dorai-Raj <sundar.dorai-raj at pdf.com> wrote:
> 
>>
>>
>> Amir Safari wrote:
>> >
>> >   Hi Dear R users,
>> >   For a pair plotting, usaully we use par( ) function. Apparently it 
>> does not work anywhere. I want to have 3 plots in a single figure, 
>> like this:
>> >   par(mfrow=c(3,1))
>> >   densityplot( a)
>> >   densityplot(b)
>> >   densityplot(c)
>> >   But it does not work. How is it possible to have such a figure 
>> with densityplot( ) in a single figure?
>> >   So many thanks for any help.
>> >   Amir Safari
>> >
>> >
>> >
>>
>> Assuming you are talking about densityplot in lattice, then you are
>> missing the point of lattice. You should try:
>>
>> library(lattice)
>> set.seed(1)
>> a <- rnorm(100)
>> b <- rnorm(50)
>> c <- rnorm(75)
>> densityplot(~a + b + c, outer = TRUE, layout = c(3, 1))
> 
> 
> This only works if a, b and c are of the same length. The following
> should work though:
> 
> densityplot(~data | which,
>            data = make.groups(a, b, c))
> 
> -Deepayan
> 

Hi, Deepayan,

My mistake. This is clear in ?densityplot. However, there is no warning 
if the condition is not met and, apparently, recycling rules are applied.

Thanks,

--sundar