[R] if else statement

PIKAL Petr petr@p|k@| @end|ng |rom prechez@@cz
Tue May 5 09:12:53 CEST 2020


Hi

another possible version 

b$pheno <- ((b$FLASER==2) | (b$PLASER==2))+1

Cheers
Petr

> -----Original Message-----
> From: R-help <r-help-bounces using r-project.org> On Behalf Of Rui Barradas
> Sent: Monday, May 4, 2020 8:32 PM
> To: sokovic.anamarija using gmail.com; r-help <r-help using r-project.org>
> Subject: Re: [R] if else statement
> 
> Hello,
> 
> Here is a way, using logical indices.
> 
> b$pheno <- NA
> b$pheno[b$FLASER == 1 & b$PLASER == 1] <- 1 b$pheno[b$FLASER == 2 |
> b$PLASER == 2] <- 2
> 
> 
> Hope this helps,
> 
> Rui Barradas
> 
> Às 18:15 de 04/05/20, Ana Marija escreveu:
> > Hello,
> >
> > I have a data frame like this:
> >
> >> head(b)
> >         FID   IID FLASER PLASER
> > 1: fam1000 G1000      1      1
> > 2: fam1001 G1001      1      1
> > 3: fam1003 G1003      1      2
> > 4: fam1005 G1005      1      1
> > 5: fam1009 G1009      NA      2
> > 6: fam1052 G1052      1      1
> > ...
> >> unique(b$PLASER)
> > [1]  1  2 NA
> >> unique(b$FLASER)
> > [1]  1  2 NA
> >
> > how can I do if else statement so that I am creating a PHENO =2 if
> > b$FLASER=2 or b$PLASER=2
> > PHENO=1 if b$FLASER=1 and b$PLASER=1
> > otherwise PHENO=NA
> >
> > I tried this but I am not sure if this is correct:
> > b$pheno=ifelse(b$PLASER==1 & b$FLASER==1,1,ifelse(b$PLASER==2 |
> > b$FLASER==2,2,NA))
> >
> > Thanks
> > Ana
> >
> > 	[[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help using 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.
> >
> 
> ______________________________________________
> R-help using 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.


More information about the R-help mailing list