Changing order of factor levels based on lookup in other column...

Convert numeric columns to factors with different labels using key...

R plot color legend by factor...

Use grouped summary to operate in another data.frame column by factor...

Add or multiply a different value by factor level...

R: characters turned into NA after rbind'ing with an empty character data frame...

How can I better control the lm() estimate labels for an ordered factor?...

Use values from Stata to R data.frame but show labels instead of values...

Order factor levels according to the order in which the levels appear in the data...

dplyr and tidyr: convert long to wide format and arrange columns...

Why does R change the variable type when prepending NA values to a data frame with factors?...

Colouring plot by factor in R...

How to auto-exclude unseen new factor levels in predict.randomForest?...

How do I quickly find out whether two (large) factors are relabelings of each other?...

Map levels of factor...

R - Replacing levels of a factor using another vector...

Replace value in a column based on a Frequency Count using R...

unsplit list, merge factors...

predict and model.matrix give different predicted means within levels of a factor variable...

h2o (un) ordered factor...

Order data.frame by factor based on integers...

Count number of factor levels that match a character string in R...

Create frequency tables for multiple factor columns in R...

random forest: error in dealing with factor levels in R...

R is passing list index value as numeric, how to force pass as characters...

Getting Values of Specific Elements of a data frame in R...

loop through a vector of variable names while dropping factor levels...

Factor unknown levels at runtime while setting labels for known levels at design time...

R - show only levels used in a subset of data frame...

R - set reference level of factor to NA...