My data set has a variable "Gender" with levels "Man" and "Woman". I want to change "Man" and "Woman" into "M" and "W" respectively. How can I do it in R?
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Maybe you want this: `levels(df$Gender) <- list(M = "Man", W = "Woman")`? – Quinten Aug 16 '23 at 12:46
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One solution is to use a factor and change the labels of the levels:
my_data <- data.frame(gender = c("Man", "Woman"))
my_data$gender = factor(my_data$gender, levels = c("Man", "Woman"), labels = c("M", "W"))
nrennie
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Thanks, I did it in my data set but it vary all column's gender into NA. I don't know what the problem is – sara Aug 16 '23 at 13:21
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Is your column already a factor? Are the values definitely capitalised? If you share a sample of your data using `dput()` we're more likely to be able to help. – nrennie Aug 16 '23 at 14:12
