| check_data | Check validity of the data and headers | 
| GCC | Generalised canonical correlation estimation for the global factors | 
| infocrit | Selection criteria for the approximate factor model | 
| multilevel | Full estimation of the multilevel factor model | 
| panel2list | data.frame to list of data matrices | 
| PC | Principal component (PC) estimation of the approximate factor model | 
| summary.multi_result | Print the relative importance ratios | 
| UKhouse | England and Wales House Price Growth Data Categorised by Regions | 
| vcov_global_comp | Get the variance estimates of the global component | 
| vcov_global_factor | Get the covariance estimates for the global factors | 
| vcov_global_loading | Get the covariance estimates for the global factor loadings | 
| vcov_local_comp | Get the variance estimates of the local component | 
| vcov_local_factor | Get the covariance estimates for the local factors | 
| vcov_local_loading | Get the covariance estimates for the local factor loadings |