Introduction to the 'connected' package
Introduction | Visualizing two-way connectedness with con_view() | Checking multi-way connectedness with con_check() | Improving connectedness with con_filter() | Example 1 | Example 2 - Missing response values | Example 3 - Concatenating two factors | Example 4: Case study: Estimating variance components | Appendix - Infrequently Asked Questions | 1. How to extract the sorted axis tick labels from the levelplot | 2. How to create consistent axis tick labels across multiple datasets | 3. How to view the axis labels and/or cell group numbers when there are many levels | Bibliography