simsurv 1.0.0 (9/1/2021)
New features
- Version number bumped to 1.0.0 to correspond to publication of JSS paper.
simsurv 0.2.5 (22/2/2019)
Bug fixes
- Fix bug where infinite survival time were incorrectly returned as NaN (due to: Inf * d = NaN when d = 0 is for a censored individual)
simsurv 0.2.4 (6/2/2019)
New features
- Allow negative shape parameters for the Gompertz distribution (note that this can lead to infinite survival times, in which case the survival time is set to ‘Inf’ and a warning is printed).
Bug fixes
- The simsurv() function documentation and the technical vignette have been updated to better clarify the parameterisations for the parametric distributions.
simsurv 0.2.3 (1/2/2019)
New features
- The
rootfun argument has been added. This allows the user to apply any transformation to each side of the root finding equation. The default is rootfun = log which corresponds to uniroot solving -H(t) - log(u) = 0.
- The
rootsolver argument has been added. This allows the user to choose between stats::uniroot or BB::dfsane for the root finding.
simsurv 0.2.2 (18/5/2018)
New features
- The
uniroot function (called internally by simsurv) now solves - H(t) - log(u) = 0 instead of exp(-H(t)) - u = 0, i.e. it is on log scale.
simsurv 0.2.1 (16/5/2018)
Bug fixes
- The
interval argument of simsurv supports a lower limit of zero (thanks to Alessandro Gasparini, @ellessenne).
simsurv 0.2.0 (6/3/2018)
New features
- Added technical and example usage vignettes
- Added user-specified cumulative hazard or log cumulative hazard
- Added analytical forms for the inverted survival function when generating survival times from standard distributions (instead of using numerical root finding). This has lead to about a 5-fold increase in speed when simulating event times from standard parametric distributions.
simsurv 0.1.0 (27/7/2017)
Initial CRAN release
NEWS Template
Version (Date)
Serious bug fixes
Bug fixes
New features