R Factors How-Tos

The following is a list of tutorials covering how-to topics on Factors category in R language. Each tutorial covers the answer for the how-to question, and a set of working examples to demonstrate the solution.

1. How to Create Factors in R ?
2. How to find Length of a Factor in R ?
3. How to Loop over a Factor in R ?
4. How to Convert Data to Factors in R ?
5. How to Order Factor Levels in R ?
6. How to Access Factor Levels in R ?
7. How to Modify Factor Levels in R ?
8. How to Reorder Factor Levels in R ?
9. How to Add Levels to a Factor in R ?
10. How to Drop Levels from a Factor in R ?
11. How to Rename Levels of a Factor in R ?
12. How to Use Factors in Data Frames in R ?
13. How to Generate Summary Statistics for Factors in R ?
14. How to Merge Factors in R ?
15. How to Split Data by Factors in R ?
16. How to Plot Factors in R ?
17. How to Convert Factors to Numeric in R ?
18. How to Convert Factors to Character in R ?
19. How to Handle Missing Values in Factors in R ?
20. How to Use Factors in Conditional Statements in R ?
21. How to Compare Factors in R ?
22. How to Create Ordered Factors in R ?
23. How to Check if a Variable is a Factor in R ?
24. How to Use Factors in Statistical Models in R ?
25. How to Collapse Factor Levels in R ?
26. How to Use Factors in Grouping Operations in R ?
27. How to Use Factors in Aggregation Functions in R ?
28. How to Deal with Unused Factor Levels in R ?
29. How to Encode and Decode Factors in R ?
30. How to Use Factors in Regression Analysis in R ?
31. How to Convert Factors to Dates in R ?