[BioC] limma package : Error in sigToEnv(signature,fdef) : Tr ying to get slot "signature" from an object of a basic class ("NULL") wit h no slots

[Seth Falcon]

"He, Yiwen (NIH/CIT)" <heyiwen at mail.nih.gov> writes:

> Thanks James, but I did do data <- as.matrix(data) before running lmFit, and
> is.matrix(data) returns TRUE. ("data" is just for illustration purpose, but
> thanks for pointing out the variable name issue.) 
>
> Any other suggestions?

You might try calling traceback() right after the error occurs and
post the output.  That may be informative as to the root cause of the
error.

+ seth