[BioC] RE: Dye Swap Experiments

[James Wettenhall]

Dear Mick,

Gordon is away, so I will attempt to answer the question.  The 
imageplot function expects a vector for its first argument, e.g. 
RG$R[,1] which is the vector of Red intensities for the first 
array.  imageplot will check that the length of this vector is 
equal to the product of the layout components.  To get an 
imageplot of log ratios for the first array, try:

MAraw <- MA.RG(RG)
imageplot(MAraw$M[,1],layout=lout)

Hope this helps.
Regards,
James

> No.  What I mean is I have an RGList object from read.maimages.  And I have a layout object defining my layout.  But if I do:
> 
> imageplot(RG,layout=lout)
> 
> I get an error message.  So how do I generate a matrix that can be used with imageplot (ie how do i generate the FIRST argument for imageplot, given that I have an RGList and an MAList if I want, for example, an imageplot of ratios)???
> 
> Thanks
> Mick