python - Converting Yes and No to 0 and 1 in R -

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how convert categorical value (yes/no) numeric value (0/1) in data set of 20 variables , 3144 observations in r?

in r can either do

 df1[] <- +(df1=="yes")

or

df1[] <- lapply(df1, function(x) as.integer(x=="yes"))

note: if "yes" should 0 , "no" 1, replace df1=="no" , x=="no" in post.


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