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
