[BioC] about siggenes

[haojie]

Hi, all
 
I need to run sam function in the siggenes package, but I can't find the
vignette of siggenes package in bioconductor website (
<http://www.bioconductor.org/> http://www.bioconductor.org/). Is there
any detailed manual about the siggenes package?  
 
The problem I encountered is when I run sam function, for example : 
sam(mydata,cl) 
there is an error : 
Error in var(v) : missing observations in cov/cor. 
How can I find the problem? And what should I do to shape my dataset for
sam function?
 
Thanks for your help!
haojie
 

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