Introduction | 1. Single-case | 2. Vectorized | 3. Basic mapper | Creating basic mappers with function_map() | Context and export | Identifying columns | Drawbacks | Writing mappers manually | Terminology | Requirements | Implications | Practical steps | Testing | S3 classes | Internal helpers | 4. audit() method | Basics | Documentation template | 5. Visualization function | 6. Sequence mapper | 7. Total-n mapper | 8. Documenting audit_seq() and audit_total_n() | Documentation templates | Wrap-up | References

Established methods | Up and coming | Possibly helpful

Overview | Reconstruct rounded numbers with reround() | Rounding procedures in detail | Up and down | To even (base R) | IEEE 754 rounding standard | Reconstruct rounding bounds with unround() | Fractional rounding | Rounding bias | Citation dummy | References

In scrutiny | Rounding at 5 in other software | Note on rounding to even

Frequency tabulation with duplicate_count() | Counting by column pair with duplicate_count_colpair() | Counting by observation with duplicate_tally()

Basic GRIM testing | Few cases: grim() | Many cases: grim_map() | Scale items | Percentage conversion | Reconstructed values | Summarizing results with audit() | Visualizing results with grim_plot() | Testing numeric sequences with grim_map_seq() | Summaries with audit_seq() | Visualizing GRIM-tested sequences | Handling unknown group sizes with grim_map_total_n() | Problems from underreporting | Semi-automated solution | Testing both ways | GRIM statistics | The probability of GRIM inconsistency | General description | Functions | Origins | Granularity and scale items | Formulas | References

Resolving conflicts

In the errorverse | Rounding at 5 in other software | Note on rounding to even

Trailing zeros | Motivation | Enter numbers as strings | Automated | With copy and paste | Restore trailing zeros | Split strings by parentheses | Basic usage | Column name suffixes | Extract substrings from before_parens() and inside_parens() | Replace column names by row values

Basic GRIMMER testing | Few cases: grimmer() | Many cases: grimmer_map() | Scale items | Summarizing results with audit() | Visualizing results with grim_plot() | Testing numeric sequences with grimmer_map_seq() | Summaries with audit_seq() | Visualizing GRIMMER-tested sequences | Handling unknown group sizes with grimmer_map_total_n() | Problems from underreporting | References

DEBIT basics | Testing multiple cases | Working with debit_map() | Summarizing results with audit() | Visualizing results with debit_plot() | Testing numeric sequences with debit_map_seq() | Summaries with audit_seq() | Visualizing DEBIT-checked sequences | Handling unknown group sizes with debit_map_total_n() | Problems from underreporting | References

Overview | Reconstruct rounded numbers with reround() | Rounding procedures in detail | Up and down | To even (base R) | IEEE 754 rounding standard | Reconstruct rounding bounds with unround() | Fractional rounding | Rounding bias | Citation dummy | References

Count decimal places | Restore trailing zeros | Sequence generation | Introduction | Examples | Sequence testing | General points | NA handling | Disperse from (around) half with disperse_total() | Test for subsets, supersets, and equal sets | References

1. Single-case | 2. Vectorized | 3. Basic mapper | 4. audit() method | 5. Sequence mapper | 6. Total-n mapper

Modal count | Modal frequency | Trivial modes | Maximal number of unique values | References

1. Return NA only if question can't be answered | General points | Modal metadata | Possible (minimal and maximal) sets of modes | 2. Still return non-NA value only if chosen by user | Ignoring NAs | The first known mode | Minimum and complete sets of modes | Theory | Taking NAs seriously enough | Not taking NAs too seriously | NA return types | References