[R] my function does not work for large data set

[Jim Holtman]

I think that your object exceeds the limit of 2^31 elements. 

Sent from my iPad

On Dec 16, 2010, at 17:44, Changbin Du <changbind at gmail.com> wrote:

> Dear R community,
> 
> I have one function, it works for small data set, but does not work on large
> data set, can anyone help me with this?
> 
>> #creat new variable by dividing each aa dimer by total_length.
>> imper<-function(x, file) {
> +                    round(x/file$length, 5)
> +                     }
> 
> 
>> dim(test)
> [1]  999 2402
> 
>> test[varname[2:2401]]<- apply(as.matrix(test[varname[2:2401]]), 2,
> function (x) imper(x, test))
> 
> 
>> dim(dimer.nn)
> [1] 999554   2402
> 
>> dimer.nn[varname[2:2401]]<- apply(as.matrix(dimer.nn[varname[2:2401]]), 2,
> function (x) imper(x, dimer.nn))
> *
> Error in unlist(X, recursive = FALSE, use.names = FALSE) :
>  negative length vectors are not allowed*
> 
> 
> Thanks so much!
> 
> -- 
> Sincerely,
> Changbin
> --
> 
> Changbin Du
> DOE Joint Genome Institute
> Bldg 400 Rm 457
> 2800 Mitchell Dr
> Walnut Creet, CA 94598
> Phone: 925-927-2856
> 
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> 
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