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levels

andy elprama 
Dear R-users,

Something strange happened within the command "levels"

R version 3.6.1
name <- c("a","b","c")
values <- c(1,2,3)
data <- data.frame(name,values)
levels(data$name)
[1] "a" "b" "c"

R version 4.0
name <- c("a","b","c")
values <- c(1,2,3)
data <- data.frame(name,values)
levels(data$name)
[1] NULL

What is happening here?

Thread (7 messages)

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