Dear Simon,

Thank you very much for your help!

Now I solved the problem following your advice. After I loaded "genefilter",the function "rowSds" run. At last I got the results.But there are some other little problems and I wonder why they happened.

1/
> sum.sam.out<-summary(sam.out,30,ll=FALSE);
Error in .local(object, ...) : unused arguments in argument((ll = FALSE)) 

The error message above appears in R 2.9 but not in R 2.4

2/
> library(estrogen);
Error in library(estrogen) : Packages not available:'estrogen'

The error message above appears in all version of R. "estrogen" is the package found in my reference book. This step is optional,so I slip it.

3/
> heatmap(exprs(AffyExpData)[sel,],col=gentlecol(256));
Error in image.default(1:nc, 1:nr, x, xlim = 0.5 + c(0, nc), ylim = 0.5 + :function not available:"gentlecol"


The error message above appears in all version of R. "gentlecol" is also the function found in my reference book. I replace it by below:

> heatmap(exprs(AffyExpData)[sel,],col =rainbow(256)); 
or
> heatmap(exprs(AffyExpData)[sel,],col = cm.colors(256)); 

It runs. But I wonder that is there many errors in my book?  Whether  'estrogen' and "gentlecol" are very old and have been removed now or did not exist at all?

Yours hopefully,


2009-05-17 



wangchuanming 

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