fmrihrf 0.2.0

New Features

• New hrf_boxcar() function for simple boxcar (step function) HRFs with optional normalization.
• New hrf_weighted() function for arbitrary weighted-window HRFs with constant or linear interpolation.
• regressor() now accepts a list of HRF objects for trial-varying HRF designs.
• New plot.Reg() method for visualizing regressor objects.
• New plot_regressors() for comparing multiple regressors on one plot (ggplot2 or base R).
• New plot_hrfs() for comparing multiple HRF shapes.
• New print.HRF() method for concise HRF summaries.

Improvements

• Revised hemodynamic response and regressor vignettes.
• Expanded test suite for new HRF types and trial-varying regressors.

Bug Fixes

• Fixed critical bug in as_hrf() where parameters stored in the params attribute were never used at evaluation time. The fix creates a closure that properly captures and applies parameters during evaluation.

fmrihrf 0.1.0

• Initial CRAN release