[BioC] Siggenes SAM analysis with unequal # of control and exp chips

Ken Termiso jerk_alert at hotmail.com
Fri Apr 22 17:23:25 CEST 2005

Hi all,

I'm trying to do a paired 3control vs. 2experimental chip analysis with SAM, 
and my class label is :

sam.cl <- c(-3, -2, -1, 1, 2)

but this throws an error :

Error in adjust.for.mt(data, cl, var.equal = var.equal) :
        Negative values are only allowed for the paired analysis. Or,
if a paired analysis should be done: There is something wrong with the class 

So what should I do? Is it best to just drop one of the control chips so 
that I have an equal number of control and experimental chips??? (It was 
planned as a 3x3 comparison, but our core botched one of my experiemental 


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