Published on CRAN: https://cran.r-project.org/package=splineplot

Major Improvements

• Y-axis scaling: Implemented proper ratio scale display for HR/OR/RR when log_scale=FALSE
  • Shows actual ratio values (e.g., 0.5, 1, 2) instead of log values
  • Automatically selects appropriate breaks based on data range
  • Removes trailing zeros from labels (1.50 → 1.5)
• X-axis improvements:
  • Fixed X-axis tick visibility and direction (now properly pointing downward)
  • Adjusted plot limits to ensure ticks are always visible
• Histogram alignment: Base of histogram now correctly aligns with secondary Y-axis 0%
• Internal refactoring: Simplified data handling by always using log scale internally for ratio metrics
  • log_scale parameter now only affects Y-axis label display
  • More consistent and predictable behavior

Bug Fixes

• Fixed missing Y-axis labels in GAM interaction plots
• Corrected reference line position (always at y=0 for log scale, which represents ratio=1)
• Fixed ylabel column missing in extract_spline_interaction() output