[BioC] PCA scree plot question

[Paul Geeleher]

Oh right, is there any way to figure out how many genes are involved
in the component or does that even make sense?

On Tue, Jun 16, 2009 at 3:39 PM, Naomi Altman<naomi at stat.psu.edu> wrote:
> Y=variance of component
>
> units are measurement units^2
>
> --Naomi
>
> At 10:05 AM 6/16/2009, you wrote:
>>
>> Can anyone tell me what the units of the numbers on the Y-axis of the
>> PCA plot are? I think its the number of genes involved in that
>> particular component but maybe someone can tell me for sure? See here
>> for an example of what I'm talking about:
>>
>> http://frink.nuigalway.ie/~pat/PCAScreePlotNorm.pdf
>>
>> Thanks alot,
>>
>> -Paul.
>>
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>
> Naomi S. Altman                                814-865-3791 (voice)
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