| add_clusters | Add cluster number to a data frame |
| add_factors | Add PCA columns along with summary statistics (KMO and Bartlett test) to a data frame |
| add_index | Calculate the mean value of multiple items |
| chatgpt | ChatGPT Adoption Dataset CG-GE-APR23 |
| codebook | Get variable and value labels from a data set |
| effect_counts | Output effect sizes and test statistics for count data |
| effect_metrics | Output effect sizes and test statistics for metric data |
| html_report | Volker style HTML document format |
| labs_apply | Set column and value labels |
| labs_clear | Remove all comments from the selected columns |
| labs_restore | Restore labels from the codebook store in the codebook attribute. |
| labs_store | Get the current codebook and store it in the codebook attribute. |
| pdf_report | Volker style PDF document format |
| plot_counts | Output a frequency plot |
| plot_metrics | Output a plot with distribution parameters such as the mean values |
| report_counts | Create table and plot for categorical variables |
| report_metrics | Create table and plot for metric variables |
| tab_counts | Output a frequency table |
| tab_metrics | Output a table with distribution parameters |
| theme_vlkr | Define a default theme for volker plots |