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Calculate Mode Using Optimized data.table Operations

Source: R/analyze_employment_transitions.R
dot-calculate_mode_optimized.Rd

Fast mode (most frequent value) calculation using data.table's .N counter instead of base R's table() function. Significantly faster for large character vectors.

Usage

.calculate_mode_optimized(x, na.rm = TRUE)

Arguments

x

Character or factor vector

na.rm

Logical; if TRUE, remove NA values before calculation

Value

Most frequent value in x, or NA if x is empty/all NA

Details

Performance: ~5x faster than table() + which.max() for 100K element vectors