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]]
Post in plain text Use grepl On May 26, 2021 9:29:10 PM PDT, Kai Yang via R-help <r-help at r-project.org> wrote:>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]] > >______________________________________________ >R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code.-- Sent from my phone. Please excuse my brevity.
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
?s 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]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>