| add_row_id | Add a row ID column to a data frame |
| as_numerical | Coerce to numerical and identify non-numerical entries |
| cols_all_unique | Identify columns with all unique values |
| cols_bijective | Identify bijective (one-to-one correspondence) columns |
| cols_binary | Identify columns with a specific number of unique values |
| cols_constant | Identify constant columns |
| cols_identify_all | Identify all columns with potential issues |
| cols_missing | Identify columns that have certain proportion of missing values |
| cols_multinary | Identify columns with a specific number of unique values |
| cols_nested | Nestedness checks |
| cols_ternary | Identify columns with a specific number of unique values |
| cols_unary | Identify constant columns |
| concurrence_matrix | Get the concurrence matrix or table |
| concurrence_table | Get the concurrence matrix or table |
| is_complete | Is variable complete within another variable? |
| is_nested | Is variable nested within another variable? |
| is_numerical | Is the variable numerical? |
| is_observational_unit | Is it the observational unit? |
| is_obs_unit | Is it the observational unit? |
| rows_missing | Identify rows that have certain proportion of missing values |
| watch_tits | Coordination of care by breeders and helpers in the cooperatively breeding long-tailed tit |
| white_clover | A field experiment assessing the roles of drought, herbivory, and local climate for white clovers |