| NCA-package | Necessary Condition Analysis | 
| ceilings | a set of all available ceiling techniques | 
| line.colors | a set defining the line colors for the plots | 
| line.types | a set defining the line types for the plots | 
| line.width | parameter defining the width of the lines in the plots | 
| nca | Run a basic NCA analyses on a data set | 
| nca.example | NCA example data with 2 independent and 1 dependent variables | 
| nca.example2 | NCA example data with 3 independent and 1 dependent variables | 
| nca_analysis | Run NCA analyses on a data set | 
| nca_outliers | Outlier detection | 
| nca_output | display the result of the NCA analysis | 
| nca_power | Function to evaluate power | 
| nca_random | generating random data that meets necessity | 
| point.color | parameter defining the point color in the plots | 
| point.type | parameter defining the plotting symbol in the plots |