add_means               Add Group Means to a Data Frame
decompose_factor        Panel Data Factor Variable Decomposition
decompose_numeric       Panel Data Numeric Variable Decomposition
describe_balance        Panel Data Balance Description
describe_dimensions     Panel Data Dimensions Description
describe_incomplete     Incomplete Entities Description
describe_patterns       Entities Presence Patterns Description
describe_periods        Time Periods Completeness Description
make_balanced           Create a Balanced Panel Dataset
make_demeaned           Within-Group Demeaning (Centering) for Panel
                        Data
make_long               Convert Panel Data from Wide to Long Format
make_panel              Panel Data Structure Setting
make_wide               Convert Panel Data from Long to Wide Format
plot_demeaned           Plot Demeaned Variable(s)
plot_heterogeneity      Heterogeneity Visualization
plot_missing            Missing Values Heatmap by Period
plot_patterns           Entities Presence Patterns Visualization
plot_periods            Time Coverage Distribution Visualization
production              Simulated Unbalanced Panel Data for
                        Cobb-Douglas Production Function Analysis
summarize_missing       Missing Values Summary for Panel Data
summarize_numeric       Summary Statistics for Numeric Variables
summarize_transition    Transition Summary
