Dear All,

I try to find differential expressed genes between treat and untreated
samples, and also I want to include the age effects.

The design matrix is like this:

treat  untreated  age
  1        0            30
  0         1           40
  1        0            35


The "treat" is factor, but "age" is continuous.  How can I set the
 "cont.matrix"?

Thanks,

Jack

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