Hi everyone, I have a data frame Gene with SNPs eg. P1 P2 P3
CG CG GG
-- -- AC
-- AC CC
AC -- AC I tried to replace all the GG with a value 3. Gene[Gene=="GG"]<-3
It always give me: Warning in `[<-.factor`(`*tmp*`, thisvar, value = 3) :
invalid factor level, NAs generated Does any know if there is anything wrong
with my code? Thanks, Zhengyu
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