Hi Rui,thank you for your suggestion.
but when I try the solution, I got message below:
Error in "MLH1" | "MSH2" : operations are possible only for numeric, logical
or complex types
does it mean, grepl can not work on character field?
Thanks,Kai On Thursday, May 27, 2021, 01:37:58 AM PDT, Rui Barradas
<ruipbarra...@sapo.pt> wrote:
Hello,
ifelse needs a logical condition, not the value. Try grepl.
CRC$MMR.gene <- ifelse(grepl("MLH1"|"MSH2",CRC$gene.all), "Yes", "No")
Hope this helps,
Rui Barradas
Às 05:29 de 27/05/21, Kai Yang via R-help escreveu:
> Hi List,
> I wrote the code to create a new variable:
> CRC$MMR.gene<-ifelse(grep("MLH1"|"MSH2",CRC$gene.all,value=T),"Yes","No")
>
>
> I need to create MMR.gene column in CRC data frame, ifgene.all column
> contenes MLH1 or MSH2, then the MMR.gene=Yes, if not,MMR.gene=No
>
> But, the code doesn't work for me. Can anyone tell how to fix the code?
>
> Thank you,
>
> Kai
> [[alternative HTML version deleted]]
>
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