| NCA-package | Necessary Condition Analysis |
| loop_data | Create list with relevant data for x and y index |
| NCA | Necessary Condition Analysis |
| nca | Run NCA analyses on a data set |
| nca.example | NCA example data with 2 independent and 1 dependent variables |
| nca_ce_fdh | Run ceiling envelopment FDH analysis on a data set |
| nca_ce_vrs | Run ceiling envelopment VRS analyses on a data set |
| nca_cols | Run COLS analyses on a data set |
| nca_cr_fdh | Run ceiling regression FDH analyses on a data set |
| nca_cr_vrs | Run ceiling regression VRS analyses on a data set |
| nca_lh | Run LH analysis on a data set |
| nca_ols | Run OLS analyses on a data set |
| nca_qr | Run QR analyses on a data set |
| nca_sfa | Run SFA analysis on a data set |