Re: [R] strange error msg from lapply and lm()

plus, it took long time to complete this analysis for only 24 records! Although I get the error msg, the result seems to be correct. -- View this message in context: http://r.789695.n4.nabble.com/strange-error-msg-from-lapply-and-lm-tp2124042p2124050.html Sent from the R help mailing list arch

[R] strange error msg from lapply and lm()

I am conducting a very simple t test for two genes using lapply (i try to avoid loop since i will have thousands of genes later on). however, I got strange error msg like the followings. It looks that R is complaining my factor has only one level, which is not the case (I check many times). > res