[R] Error in "rownames"

[JIALU YAO]

Hello,

When I type the code *rownames(gene_exp_matrix)<-levels(geneidfactor)*,the
error happens: Error in "rownames<-(*tmp*,value=character(0)):can not set
object to 'rownames'.

I am using Mac OS X10.10.2.

How can I fix this problem?

Thank a lot.

Yao



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