cIRT
A choice-based IRT model published once in 2019 and kept compiling ever since
Comparison · Analytics
itp vs r2dii.analysis
A side-by-side editorial comparison of itp and r2dii.analysis — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:r-package
itp vs r2dii.analysis: at a glance
What is itp?
A single-algorithm root-finder that finished its job in 2022 and has been idling since
itp implements one thing: the Interpolate, Truncate, Project root-finding algorithm of Oliveira and Takahashi, which narrows a bracketing interval each iteration and keeps bisection's worst-case guarantee while converging faster on well-behaved functions. The package reached its intended shape within about six weeks of first release, gaining a C++ entry point and the ability to take C++ function pointers. Everything after mid-2022 is compiler and CRAN upkeep.
What is r2dii.analysis?
The climate-alignment maths behind PACTA, now stable and maintained rather than reshaped
r2dii.analysis computes the target-setting side of PACTA: market-share and sectoral decarbonisation targets that measure a loan book or portfolio against climate scenarios. It sits downstream of the matched company data the sibling packages produce. The 0.5.0 release declared it lifecycle-stable and handed maintenance to a new lead, and releases since have been narrow corrections rather than new methods.
itp vs r2dii.analysis: editorial side-by-side
itp
0.0ANALYTICS
A single-algorithm root-finder that finished its job in 2022 and has been idling since
◆ Current state
itp implements one thing: the Interpolate, Truncate, Project root-finding algorithm of Oliveira and Takahashi, which narrows a bracketing interval each iteration and keeps bisection's worst-case guarantee while converging faster on well-behaved functions. The package reached its intended shape within about six weeks of first release, gaining a C++ entry point and the ability to take C++ function pointers. Everything after mid-2022 is compiler and CRAN upkeep.
◆ Where it's heading
The arc is short and complete. Three releases in June and July 2022 took the package from an R implementation to one that can run the whole algorithm in C++ and accept user-supplied C++ functions via Rcpp's external pointer framework. Since then the only releases have been reactions to Rcpp changes that would otherwise trip CRAN checks — 2023 and 2026, both traceable to specific upstream Rcpp issues.
◆ Prediction
There is no visible development agenda here; the entries suggest the package surfaces only when Rcpp or CRAN check policy forces a patch.
r2dii.analysis
0.0ANALYTICS
The climate-alignment maths behind PACTA, now stable and maintained rather than reshaped
◆ Current state
r2dii.analysis computes the target-setting side of PACTA: market-share and sectoral decarbonisation targets that measure a loan book or portfolio against climate scenarios. It sits downstream of the matched company data the sibling packages produce. The 0.5.0 release declared it lifecycle-stable and handed maintenance to a new lead, and releases since have been narrow corrections rather than new methods.
◆ Where it's heading
The history is a package converging. Early releases churn the output contract of target_market_share() and target_sda() — which sectors appear, which years, how missing production is treated — and each change alters the numbers users get. The ald-to-abcd rename runs across several releases before completing, and by 0.5.0 the churn has stopped, with three older summarise functions soft-deprecated and the package marked stable. What remains is edge-case correctness in target coverage.
◆ Prediction
With the package marked stable and the terminology migration finished, the soft-deprecated summarise functions are the obvious next thing to remove outright.
Alternatives to itp and r2dii.analysis
Other Analytics 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 itp or r2dii.analysis.
MetaboAnalystR
The R engine behind MetaboAnalyst closes the gap from raw spectra to biological interpretation
fmtr
Rebuilding SAS's formatting layer in R, one format specification at a time
betaselectr
Standardised coefficients for models where standardising everything is wrong — but the feed only links out
SSN2
Stream-network spatial models learning to run on data that no longer fits in memory
BiocManager
Bioconductor's installer, frozen at 1.30.x and tuned almost entirely through environment variables
See all itp alternatives → · See all r2dii.analysis alternatives →
Recent activity from itp and r2dii.analysis
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7mo agor2dii.analysisLow-carbon technology targets filled in for partial company coverage
- 7mo agoitpRcpp Rf_error masking patch, README and help-file typo
- 1y agor2dii.analysisColumn definitions filled into the data dictionary
- 1y agor2dii.analysisPackage declared stable, three summarise functions soft-deprecated
- 2y agor2dii.analysisald argument removed for good in favour of abcd
- 2y agor2dii.analysisCompany-level SDA converges on the scenario's final year
- 2y agoitpRcpp fix clears CRAN check warnings
- 3y agor2dii.analysisRepository moved to the RMI-PACTA organisation
- 4y agoitpitp_c runs the whole algorithm in C++
- 4y agoitpAccepts C++ function pointers, adds a plot method
- 4y agoitpBracketing interval fix for locally decreasing functions
- 4y agoitpFirst release of the ITP root-finding algorithm
Frequently asked questions
What is the difference between itp and r2dii.analysis?
Both compete on the same themes — r-package — within Analytics. itp and r2dii.analysis are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is itp better than r2dii.analysis?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. itp and r2dii.analysis are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to itp?
Top itp alternatives in Analytics are ranked by recent ship velocity. Browse the "itp alternatives" section above for the current picks, or visit /alternatives/itp for the full list with editorial commentary on each.
What are the best alternatives to r2dii.analysis?
Top r2dii.analysis alternatives in Analytics are ranked by recent ship velocity. Browse the "r2dii.analysis alternatives" section above for the current picks, or visit /alternatives/r2dii-analysis for the full list with editorial commentary on each.