[R] Log(2) values to log(10) values

[Liaw, Andy]

Multiply by log(2)/log(10); e.g., 

> log2(1024) * log(2)/log(10)
[1] 3.0103
> log(1024, 10)
[1] 3.0103

Andy

> From: Srinivas Iyyer
> 
> Dear group, 
>  I am using justRMA in bioconductor to get expression
> values.  Now I computed fold changes.  the fold
> changes i get are log2 values.  
> 
> How can I convert these to log10 values to see them as
> actual fold change values. 
> 
> thank you.
> 
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