Re-ordering factor levels in data frame
133825
Reorder levels of a factor without changing order of values
104236
Factor analysis and regression
58050
How to pivot a dataframe?
3989
Preprocess categorical variables with many values
49862
Aligning Data frame with missing values
1386
Order data frame by two columns in R
25857
Remove lines based on duplicates within one column without sort
86254
Ordinal regression with categorical covariates and predictors
131373
converting string IDs into numbers in a multilevel analysis using R
40352
Equal standard errors for all levels of a categorical factor in lmer
19141
How to reorder data.table columns (without copying)
79594
Convert factor to integer in a data frame
128388
Proper order of variables in unbalanced ANOVA
123566
Recoding a variable with three levels into a dummy variable
114580
How to change the order of facet labels in ggplot (custom facet wrap labels)
10256
Principled way of collapsing categorical variables with many levels?
156171
Sort columns of a dataframe by column name