[R] grouping in scatterplot3d

[Uwe Ligges]

Rishabh Gupta wrote:
> 
> Hi all,
>     I've been using the scatterplot3d function (from the scatterplot3d library) to create 3D plots. I was wondering whether there is
> anyway to group the points according to a particular group variable. For example I used the plot function as
>     plot( factor( <GROUPINGVAR> ) , <PLOTVARS> )
> to organise the results in a according to the grouping variable. 

And you got boxplots ...


> I was wondering whether there is any equivalent way of doing this
> with scatterplot3d or any other equivalent 3d plotting function. 
> I understand that this would be a difficult task since 
> there are 'no spare dimensions' but for example could the function 
> differentiate between different groups using colours or find 
> clusters

You want that the plotting function finds clusters? I am
misunderstanding ...

Of course you can color the different groups. Make use of the argument
'color', another choice is the use of different plotting characters
(argument 'pch'). In your syntax:

 scatterplot3d(<PLOTVAR>, [<PLOTVAR2>], [<PLOTVAR3>], 
   color = as.integer(factor(<GROUPINGVAR>)))

Uwe Ligges
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