[R] Help

[Uwe Ligges]

Silika Tereshchenko wrote:
> Dear all,
> 
> 
> 
> I have the problem, please, help me. I tried to import the dataset from the SPSS
> into the R. It is the panel (survey). The importing of the data show that my
> variables are read as afactor in R. But I need the variable "income" as a
> numeric one. I tried to use the following command:   
> 
>  for(i in
> c("AGE99","AGE00","I99PTOT","I00PTOT","I99PTOTN","I00PTOTN","I99PTOTG","I00PTOTG"))
> + {df[[i]]<-as.numeric(df[[i]])}
>  
> and then I get the error message. 
> Error in "[[<-.data.frame"(*tmp*, i, value = as.numeric(df[[i]])) : 
>         replacement has 1 rows, data has 6335
> 
> What can I do? Could you please help me. I need it for my work.

Is df really a data.frame? Can you tell us about its structure using 
str(df)? What is your version of R?
Your statement works for me with a simple example of df[[i]].

Uwe Ligges



> Dear all,
> 
> 
> 
> I have the problem, please, help me. I tried to import the dataset from the SPSS
> into the R. It is the panel (survey). The importing of the data show that my
> variables are read as afactor in R. But I need the variable "income" as a
> numeric one. I tried to use the following command:   
> 
>  for(i in
> c("AGE99","AGE00","I99PTOT","I00PTOT","I99PTOTN","I00PTOTN","I99PTOTG","I00PTOTG"))
> + {df[[i]]<-as.numeric(df[[i]])}
>  
> and then I get the error message. 
> Error in "[[<-.data.frame"(*tmp*, i, value = as.numeric(df[[i]])) : 
>         replacement has 1 rows, data has 6335
> 
> What can I do? Could you please help me. I need it for my work.
> 
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