extr 1.0.0 (2025-09-15)

Up to 0.9.0

• Core extinction-risk estimator ext_di for density-independent (drifted Wiener) models. Provides:
  • MLEs of growth rate and environmental variance from irregular time series.
  • Point estimate of extinction probability.
  • Confidence intervals for extinction probability (w-z method) with near-nominal coverage.
  • QQ-plot diagnostic optional.

Changes in 1.0.0

• Numerical stability and range
  • Adaptive probability representation on G, log G, and log(1-G). The complement is used when G is near 0 or 1 to maintain accuracy.
  • The log scale removes double-precision bounds near 0 and 1, extending the safe window down to symbolic exp(-DBL_MAX). Probabilities close to 0 or 1 are displayed as 10^-* or 1-10^-*.
• Printed output
  • Printed precision is configurable via options(“extr.digits”).