r - Converting a dataframe of label/values to a named numeric vector -

r - Converting a dataframe of label/values to a named numeric vector -

i trying convert dataframe labels/values named numeric vecotr. illustration have next dataframe

>df=data.frame(lab=c("a","b","c","d"),values=c(1,2,3,4)) > df lab values 1 1 2 b 2 3 c 3 4 d 4

so trying iterate or utilize function on info frame next

>v_needed=c("a"=1,"b"=2,"c"=3,"d"=4) > v_needed b c d 1 2 3 4

i tried convert factor didn't give desired output

>v_failure=factor(df$values,labels=df$lab)

you can utilize setnames function

v <- with(df, setnames(values, lab)) v # b c d # 1 2 3 4

r