| asNumericIfPossible | Convert a Vector or Data Frame Into Numeric Values If Possible |
| catch_asNumericIfPossible | Use 'asNumericIfPossible' with modified warning. |
| contr.wec.weighted | Calculates contrasts for a weighted factor variable based on weighted effect coding |
| crop | Remove Trailing and Leading Characters From Character Strings |
| descr | Descriptive statistics for one or several variables |
| eatTools | eatTools: Miscellaneous Functions for the Analysis of Educational Assessments |
| existsBackgroundVariables | Internally needed function for consistency checks and data preparation. |
| facToChar | Transform columns in a data frame |
| gsubAll | Pattern matching and replacement |
| halveString | Split string exactly in two parts |
| insert.col | Insert Columns into a Data Frame in a Specific Position |
| multiseq | multiple sequences |
| num.to.cat | Transform continuous variables into ordered factors |
| removeNonNumeric | Removes all non-numeric characters from a string. |
| removeNumeric | Removes alphanumeric characters from a string. |
| removePattern | Removes a specified pattern from a string. |
| set.col.type | Set the Class of Columns in a Data Frame |
| tablePattern | Creates skeleton for frequency tables with desired values |
| tableUnlist | Frequency table for data frames, e.g. across multiple columns |
| whereAre | Matches a scalar with elements of a vector. |
| wideToLong | Transform wide format data sets into the long format necessary for 'eatRep' analyses |
| wtdTable | Computed weighted frequency tables |
| wtdVar | Computed weighted variance |