[BioC] adding rowname to exprset or matrix

[yanju]

Dear all,

Still I want to filter genes by names. Because exprSet and matrix are 
numerical, therefore I added rownames value to the matrix like follows:
ma.paq is my MAList.

my_matrix<-as.matrix.MAlist(ma.paq)
row.names(my_matrix)<-ma.paq$genes$Names

then I have a matrix with genename as rowname.

But I am not quite sure that these genenames and matrix values are still 
corresponding to eachother as before. I want to know is there any switch 
during the convertion. or is this mehod doable

Thanks,

Yanju