[BioC] PCA to remove batch effect.

[Fabrice Tourre]

Dear list,

In my mrcroarray data, there is batch effect. But I am not very clear
what kind of batch effect in it. I want to using PCA to remove batch
effect, but I am confused how to from the raw expression data to get a
new expression data without batch effect in it.

Any suggestion will be welcome.

Thanks.