在 R 中将多个数值重新编码为新值

Question

I want to recode many unique numeric values (>3000) of one column into new values. The unique values appears many times in the column? I am using R and all available functions like recode need the definition of all new values! Is there a way to define the new values as a range?

values: 131181420120103, 131181420120307, 4330108120070420, 5330068820110810...

possible new values:1, 2, 3, 4, ...

Answer 1

We can use match on the column

data$col1 <- match(data$col1, unique(data$col1))