pr2database
The protist reference database keeps widening past the rRNA gene it was built on.
Comparison · Infra & APIs
massProps vs states
A side-by-side editorial comparison of massProps and states — release velocity, themes, recent moves, and the top alternatives to consider.
massProps vs states: at a glance
What is massProps?
A mass-properties rollup spends a year on documentation and follows its sibling's API
massProps computes mass, centre of mass and inertia tensors — and their uncertainties — over tree-structured assemblies, the calculation systems engineers run on a spacecraft or vehicle breakdown. It sits on top of rollupTree, the same author's generic recursive-computation engine, and its most recent release exists only to adopt accessor functions that sibling added two weeks earlier.
What is states?
State-panel tooling holding steady since its 2020 data and ergonomics release.
states supplies the Gleditsch & Ward and Correlates of War state lists and the tooling to turn them into country-year or country-month panels, with plot_missing() for coverage checks. The substantive work landed in 2020; the releases since are compatibility fixes against ggplot2, dplyr, readr and testthat. The most recent entry is a single test repair.
massProps vs states: editorial side-by-side
massProps
0.0INFRA · APIS
A mass-properties rollup spends a year on documentation and follows its sibling's API
◆ Current state
massProps computes mass, centre of mass and inertia tensors — and their uncertainties — over tree-structured assemblies, the calculation systems engineers run on a spacecraft or vehicle breakdown. It sits on top of rollupTree, the same author's generic recursive-computation engine, and its most recent release exists only to adopt accessor functions that sibling added two weeks earlier.
◆ Where it's heading
Every release in the window is documentation, benchmarks, or keeping in step with rollupTree. The inertia tensor and radius-of-gyration uncertainty equations have been reformatted and re-explained three separate times, which suggests the hard part of this package is not the computation but making the covariance treatment legible to the engineers meant to trust it. Development effort clearly sits in the engine underneath, not here.
◆ Prediction
The pattern is unambiguous: rollupTree ships an API change and massProps follows within a fortnight. Whatever the engine does next is what appears here next, and on this evidence it will arrive as a one-line release note.
states
0.0INFRA · APIS
State-panel tooling holding steady since its 2020 data and ergonomics release.
◆ Current state
states supplies the Gleditsch & Ward and Correlates of War state lists and the tooling to turn them into country-year or country-month panels, with plot_missing() for coverage checks. The substantive work landed in 2020; the releases since are compatibility fixes against ggplot2, dplyr, readr and testthat. The most recent entry is a single test repair.
◆ Where it's heading
The package has reached the point where its own data and API are settled and the release trigger is upstream churn in the tidyverse. What movement there is goes toward making the two state lists interchangeable, with the microstates coding carried from G&W onto the COW data as the clearest example, rather than toward new datasets.
◆ Prediction
The next release is most likely another compatibility pass; a data refresh would be the signal that the package is active again.
Alternatives to massProps and states
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 massProps or states.
ggalign
Composable aligned layouts, rebuilt on S7 while ggplot2 4.0 lands underneath.
prioritizr
Conservation planning absorbs the literature's target-setting rules as code.
jSDM
Joint species distribution models in Gibbs-sampled C++, quiet since 2023.
rsofun
An ecosystem model starts tracking carbon isotopes and land-use change.
usmap
Ten years in, US mapping splits its data out and finally adds Puerto Rico.
See all massProps alternatives → · See all states alternatives →
Recent activity from massProps and states
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6mo agomassPropsSwitched to rollupTree's new row accessors
- 6mo agomassPropsError in the inertia tensor uncertainty documentation
- 0y agostatesplot_missing() test fixed for the next ggplot2
- 1y agomassPropsBenchmark results and equation layout cleaned up
- 1y agomassPropsCombine functions given consistent formal parameters
- 1y agomassPropsExamples shrunk to fit CRAN runtime limits
- 2y agostatesggplot2 and dplyr deprecation cleanup
- 2y agostatesBundled state data stripped to plain data frames
- 5y agostatesMicrostate coding for COW data and state_panel() shortcuts
- 7y agostatesSimpler defaults for state_panel() and plot_missing()
Frequently asked questions
What is the difference between massProps and states?
They serve adjacent needs but don't currently overlap on shipped themes. massProps and states 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 massProps better than states?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. massProps and states 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 Infra & APIs products to evaluate alongside.
What are the best alternatives to massProps?
Top massProps alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "massProps alternatives" section above for the current picks, or visit /alternatives/massprops for the full list with editorial commentary on each.
What are the best alternatives to states?
Top states alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "states alternatives" section above for the current picks, or visit /alternatives/states for the full list with editorial commentary on each.