[R] Changing sign of columns and values

hanatezera h@n@tezer@ @end|ng |rom gm@||@com
Sun Jun 12 13:14:34 CEST 2022

Dear Jim, Thanks a lot this is exactly i am looking for.Stay safe and blessed !Best,Hana
-------- Original message --------From: Jim Lemon <drjimlemon using gmail.com> Date: 6/12/22  6:43 AM  (GMT+03:00) To: hanatezera <hanatezera using gmail.com> Cc: r-help mailing list <r-help using r-project.org> Subject: Re: [R] Changing sign of columns and values Hi Hana,I didn't look closely. The simplest rule that I can see is that theletters (nucleotides?) should be swapped if there has been a signchange in the beta value. Therefore:mydf<-read.table(text="IDnumber  OA  EA  beta1   C       A       -0.052   G        A        0.0983   G        T        -0.789",header=TRUE,stringsAsFactors=FALSE)# logical vector marking the rows to be swappedswap_letters<-mydf$beta < 0# save the OA values to be swappednewEA<-mydf$OA[swap_letters]# change the OAs to EAsmydf$OA[swap_letters]<-mydf$EA[swap_letters]# set the relevant EA values to the old OA valuesmydf$EA[swap_letters]<-newEA# change the beta valuesmydf$beta<-abs(mydf$beta)mydfJimOn Sun, Jun 12, 2022 at 9:11 AM hanatezera <hanatezera using gmail.com> wrote:>> Dear jim thanks for your help! I want to change also the value of OA and EF simultaneously.> For instance i am looking the data> mydf> IDnumber OA EA  beta> 1        1  A  C  0.050> 2        2  G  A 0.098> 3        3  T   G 0.789>> Best,> Hana>>>> -------- Original message --------> From: Jim Lemon <drjimlemon using gmail.com>> Date: 6/12/22 1:59 AM (GMT+03:00)> To: hanatezera <hanatezera using gmail.com>, r-help mailing list <r-help using r-project.org>> Subject: Re: [R] Changing sign of columns and values>> Hi Hana,> I think this is what you want:>> # first read in your example> mydf<-read.table(text=> "IDnumber  OA  EA  beta> 1   C       A       -0.05> 2   G        A        0.098> 3   G        T        -0.789",> header=TRUE,stringsAsFactors=FALSE)> # check it> mydf> IDnumber OA EA   beta> 1        1  C  A -0.050> 2        2  G  A  0.098> 3        3  G  T -0.789> # change values of mydf$beta to absolute values> mydf$beta<-abs(mydf$beta)> mydf> IDnumber OA EA  beta> 1        1  C  A 0.050> 2        2  G  A 0.098> 3        3  G  T 0.789>> Jim>> On Sun, Jun 12, 2022 at 8:27 AM hanatezera <hanatezera using gmail.com> wrote:> >> > I have the following data set in data frameIDnumber  OA  EA  beta1                         C       A       -0.052                         G        A        0.0983                          G        T        -0.789....I want to change the sign of negative beta. If the negative value change to postive i want to switch its EA and OA.My desire result will beIDnumber  OA  EA  beta1                         A      C     0.052                         G        A        0.0983                          T         G        0.789....Any one can help me with r codes? kind regards,Hana> >         [[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.
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