Replacing '?' in a dataframe in R with ZEROs in R -
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i need replacing '?' on data frame zeros in r language.
any highly appreciated. regards
df <- data.frame( a=c(1,"?",3), b=c(1:3), c=c("a", "b", "?") ) df <- apply(df, margin = 2, fun = function(x) { x[x == "?"] <- 0 x }) as.data.frame(df) # b c # 1 1 1 # 2 0 2 b # 3 3 3 0
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