[BioC] using nlme correlation structures in limma?

Gordon K Smyth smyth at wehi.EDU.AU
Thu May 26 14:57:46 CEST 2005


> Date: Wed, 25 May 2005 20:51:52 -0600
> From: Jacob Michaelson <jjmichael at comcast.net>
> Subject: [BioC] using nlme correlation structures in limma?
> To: bioconductor at stat.math.ethz.ch
>
> Do any of the BioC demi-gods know how difficult it would be to use
> nlme's correlation structures:
>
> corAR1
> autoregressive process of order 1.
> corARMA
> autoregressive moving average process, with arbitrary orders for the
> autoregressive and moving average components.
> corCAR1
> continuous autoregressive process (AR(1) process for a continuous
> time covariate).
> corCompSymm
> compound symmetry structure corresponding to a constant correlation.
>
> ...in limma's lmFit as the "correlation=" argument?

Are you planning to take this on as a research project, or are you asking about how the software
works?  If the later, this is not possible.  You can be sure it would be mentioned in the document
it it was.

Gordon

> Thanks in advance,
>
> Jake



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