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Comparison · Infra & APIs
gkwdist vs HydroPortailStats
A side-by-side editorial comparison of gkwdist and HydroPortailStats — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:r-package
gkwdist vs HydroPortailStats: at a glance
What is gkwdist?
gkwdist keeps finding that its distributions were returning the wrong numbers.
The package implements the Generalized Kumaraswamy distribution family and its sub-families. The current release fixes six numerical defects, the most serious being that dgkw() returned zero for every input because internal helpers collided with same-named functions in R's public Rmath.h header. Log-likelihoods for three sub-families were also wrong for data near zero due to clamping instead of working in log space.
What is HydroPortailStats?
France's national flood statistics, ported out of Fortran and into R.
HydroPortailStats exposes the statistical machinery behind the French HydroPortail — distribution fitting, quantile curves and their uncertainties for hydrological series. The 2025 release re-implements the HBay Fortran executable in R, adding Bayesian estimation from historical flood records with censored and interval-valued data and systematic measurement error, plus a triangular distribution and truncated random generation.
gkwdist vs HydroPortailStats: editorial side-by-side
gkwdist
2.5INFRA · APIS
gkwdist keeps finding that its distributions were returning the wrong numbers.
◆ Current state
The package implements the Generalized Kumaraswamy distribution family and its sub-families. The current release fixes six numerical defects, the most serious being that dgkw() returned zero for every input because internal helpers collided with same-named functions in R's public Rmath.h header. Log-likelihoods for three sub-families were also wrong for data near zero due to clamping instead of working in log space.
◆ Where it's heading
Every release in this window is correctness work with an unchanged public API — critical MLE fixes in 1.1.3, a CRAN timing-test patch in 1.1.4, numerical corrections in 1.1.5. The recurring theme is that analytically correct formulas were being defeated by implementation details: name collisions, sign errors returning negative infinity where positive was required, and clamping thresholds that destroyed precision in the tails. Test infrastructure added in 1.1.2 validates analytical derivatives against numerical differentiation, which is how several of these were caught.
◆ Prediction
Expect further validation-driven fixes rather than new distributions, since the derivative-checking suite added earlier is still surfacing defects in existing routines.
HydroPortailStats
0.0INFRA · APIS
France's national flood statistics, ported out of Fortran and into R.
◆ Current state
HydroPortailStats exposes the statistical machinery behind the French HydroPortail — distribution fitting, quantile curves and their uncertainties for hydrological series. The 2025 release re-implements the HBay Fortran executable in R, adding Bayesian estimation from historical flood records with censored and interval-valued data and systematic measurement error, plus a triangular distribution and truncated random generation.
◆ Where it's heading
The package started as a straight extraction of the portal's existing functions and is now absorbing the surrounding legacy toolchain: HBay was a separate compiled program with its own config files, and this release brings both the method and its configuration format inside R. Releases are sparse — three in two years, with an eighteen-month gap before the latest — and the intervening one was CRAN paperwork.
◆ Prediction
The HBay import came with a configuration-file reader for continuity with the old executable, which suggests further legacy hydrological tooling could follow the same path; the entries name no specific next target.
Alternatives to gkwdist and HydroPortailStats
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either gkwdist or HydroPortailStats.
estimatr
Fast design-based estimators for experiments, coasting on CRAN patches.
ggdist
The grammar of uncertainty visualization, now drawing the uncertainty in its own estimates.
ipaddress
IP address vectors for R that hit 1.0 and then went quiet.
ltertools
A column-key toolkit for stitching decades of ecological field data into one table.
finnts
Microsoft's automated forecasting framework, still mostly a one-maintainer effort.
See all gkwdist alternatives → · See all HydroPortailStats alternatives →
Recent activity from gkwdist and HydroPortailStats
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6d agogkwdistv1.1.5 — Numerical correctness fixes and componentwise derivative validation
- 2mo agogkwdistv1.1.4 — CRAN fix: skip timing-based tests on CRAN
- 2mo agogkwdistv1.1.3 — Critical MLE Bug Fixes & Numerical Corrections
- 7mo agogkwdistAdds analytical derivative validation across all sub-families
- 8mo agogkwdistRefactors the C++ backend around stable log-space utilities
- 1y agoHydroPortailStatsHistorical flood records enter the estimator via an HBay port ⚡
- 3y agoHydroPortailStatsCRAN submission renames the return-period arguments
- 3y agoHydroPortailStatsFirst release: the HydroPortail statistical functions in R
Frequently asked questions
What is the difference between gkwdist and HydroPortailStats?
Both compete on the same themes — r-package — within Infra & APIs. gkwdist is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is gkwdist better than HydroPortailStats?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. gkwdist is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to gkwdist?
Top gkwdist alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "gkwdist alternatives" section above for the current picks, or visit /alternatives/gkwdist for the full list with editorial commentary on each.
What are the best alternatives to HydroPortailStats?
Top HydroPortailStats alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "HydroPortailStats alternatives" section above for the current picks, or visit /alternatives/hydroportailstats for the full list with editorial commentary on each.