[R] Changing sign of columns and values

[Jim Lemon]

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
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