[R] Use variable inside Function for updating the matrix
Uwe Ligges
ligges at statistik.tu-dortmund.de
Tue May 29 10:48:21 CEST 2012
On 29.05.2012 09:17, Rantony wrote:
> Hi,
>
> Here i have a data frame like this,
> frame name is "dat"
> *NAME AGE ELIGIBLE*
> A 20
> B 14
> C 35
> D 10
> E 50
>
> In this, i want to change the column '*ELIGIBLE*' status to '*YES*' If, AGE
> between 18 to 35
> Which means that, i should get a put like this...
> *NAME AGE ELIGIBLE*
> A 20 YES
> B 14
> C 35 YES
> D 10
> E 50
> ----------------------------------------------
> Now i got the solution for this,
> dat[dat$AGE<=35& da$AGE>18,"ELIGIBLE"]<-YES
>
> My issue is, i assigned AGE to a variable and that variable i tried inside
> the function.
> for eg:-
> *Obj_Name*<- AGE
> dat[dat$*Obj_Name*<=35& da$*Obj_Name*>18,"ELIGIBLE"]<-YES
> Now, what is i getting the error !.
You need
dat[[Obj_Name]] rather than dat$Obj_Name, the latter means the same as
dat[["Obj_Name"]] and hence is wrong.
Uwe Ligges
> So,could you please help me, what is the solution *pass column name through
> *variable to this function ?
>
> Can i get immediate solution please ?
>
> - Thanks
> Antony
>
> --
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>
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