On Dec 3, 2007 1:27 PM, alison waller <alison.waller@utoronto.ca> wrote:

>  Thanks – ooh those pesky quotes.
>
>
>
> Okay – how about for the log2R?
>

You have a number of choices, I would think.  The simplest, though is to
make a copy (or not, if you do not care to keep the original data) of your
RG object and substitute the log2() for the original scale:

RG1 <- RG
RG1$R <- log2(RG1$R)
RG1$G <- log2(RG1$G)

Then, you can use imageplot3by2(RG1,...) on these data.

Sean

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