[EMAIL PROTECTED] wrote:
> : 
> 
> Hi!
> 
> I'm Pietro, a young bioinformatic from Italy who is trying to make Base2 
> usable 
> for the researchers here where I work.
> 
> The problem cames out when I try to make fold change filter on Base2-MeV.
> 
> As you know MeV allow fold change filter only if you load affymetrix data so 
> when data cames from Base2 I can't reach this filter.

I don't know anything about the fold change in MeV. Why does it only 
work on Affymetrix data?

> I also tried (with the help of same skilful programmers) to change the code 
> of 
> Base2-MeV cutting the code where there was the "IF" that checked the type of 
> the data, I had the menĂ¹ option but MeV didn't apply the filter when I select 
> it.
> 
> I think the problem is the format of the data that arrive to MeV from Base2.

The data that BASE exports to MeV is always the same, no matter where it 
comes from. For one-channel data the single intensity value is exported. 
For two-channel data the log-ratio: log2(ch1/ch2)

BASE exports this information in TDMS (Tab-delimited Multiple Sample) 
format. Appendix 15.2 in the MeV documentation 
(http://www.tm4.org/documentation/MeV_Manual_4_0.pdf) is about this format.

/Nicklas

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