R help - Jan 2009 - Cloud Function Error

I have created a 5 column matrix of the data and here have shown the
variable names of each column.  I do not understand the error message given
when I try to run the cloud function  Thank you in advance for your help.
> V1<-data[,1]
> V2<-data[,2]
> V3<-data[,3]
> V4<-data[,4]
> Gender<-data[,5]
> library(lattice)
> cloud(V1~V2*V3)
Error in extend.limits(range(as.numeric(z), finite = TRUE)) :
  (list) object cannot be coerced to type 'double'

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Steven Mortimer wrote:
> I have created a 5 column matrix of the data and here have shown the
> variable names of each column.  I do not understand the error message given
> when I try to run the cloud function  Thank you in advance for your help.
> 
>> V1<-data[,1]
>> V2<-data[,2]
>> V3<-data[,3]
>> V4<-data[,4]
>> Gender<-data[,5]
>> library(lattice)
>> cloud(V1~V2*V3)
At least one of V1, V2 or V3 is not a vector that can be coerced to be 
numeric, i.e. cannot be plotted this way.
Take a look at the data types / modes and you will see what is not OK:

str(V1)
str(V2)
str(V3)

Uwe Ligges



> Error in extend.limits(range(as.numeric(z), finite = TRUE)) :
>   (list) object cannot be coerced to type 'double'
> 
> 	[[alternative HTML version deleted]]
> 
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