Skip to contents

Changelog

survdistr (development version)

survdistr 0.0.3

CRAN release: 2026-04-09

  • Improved documentation
  • Refactored interp_cif()
  • Added trapezoidal integration option for continuous hazard/density to survival conversion in convert_to_surv()
  • Renamed argument: trim_duplicates to trim_dups

survdistr 0.0.2

  • Added convert_to_surv() for efficient transformation of hazard/density functions to survival at anchor time points (uses C++ internally).
  • Introduced trim_duplicates() to remove repeated S(t) values across the time axis, with tolerance.
  • Added interp_cif() for constant interpolation of CIF (uses C++ internally).
  • Added extract_times() to consistently obtain and validate time points from vectors or matrices.
  • Unified assertion functions into one: assert_prob().
  • Unified mat_interp() and vec_interp() into a single interp() function.
  • Enhanced interp():
    • Added aliases for the three interpolation options (e.g., const_haz is equivalent to exp_surv).
    • Implemented S(t) interpolation in C++ for all 3 options (output = "surv"); H(t) and F(t) follow similarly.
    • Implemented f(t) interpolation in C++ for all 3 options (output = "density")
    • Implemented h(t) interpolation in C++ for all 3 options (output = "hazard")
    • Requires unique and ordered eval_times, resulting in significant C++ speed-up.
    • Allows passing times separately to preserve precision.
  • Improved survDistr:
    • Removed data_type argument; input now only S(t).
    • Added aliases for the three interpolation options.
    • Allows passing times during construction separately for precision.
    • Introduced filter() method for in-place object filtering.
    • Added rows argument to filter input matrix before interpolation without altering the object.
    • method and times are now active fields, not public members.
    • Added S3 conversion via as_survDistr(x).
  • Added unit tests for all features.

survdistr 0.0.1

  • Base survDistr class.
  • assert_prob_matrix() for asserting survival, CDF and CIF matrices.
  • mat_interp() and vec_interp() for constant and linear interpolation of survival, CDF and CIF matrices/vectors (using internal Rcpp methods).