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quantities vs ss3diags

A side-by-side editorial comparison of quantities and ss3diags — release velocity, themes, recent moves, and the top alternatives to consider.

Shared themes:r-package

quantities vs ss3diags: at a glance

Featurequantitiesss3diags
SectorAnalyticsAnalytics
Velocity score0.00.0
Sparks · 30d00
Top themesunits, measurement-uncertainty, error-propagation, r-packagefisheries-stock-assessment, model-diagnostics, r-package, noaa
Last editorial update1h ago1h ago
WebsiteVisit →Visit →

What is quantities?

The glue package that makes R carry units and uncertainty through the same calculation.

quantities combines the units and errors packages into one class so values keep both their measurement units and their uncertainty through arithmetic, subsetting and data frame operations. Recent releases have been narrow: fixes to the covariance and correlation implementations, and performance work on the data.frame methods. Most of the release traffic is coordination with its two parent packages.

Read the full quantities trajectory →

What is ss3diags?

A fisheries diagnostics package that lives and dies by one upstream dependency.

ss3diags provides residual, retrospective and hindcast cross-validation diagnostics for Stock Synthesis models, sitting directly on top of r4ss. Its recent history is dominated by that dependency: when r4ss 1.50.0 renamed columns across its read and write functions, ss3diags pinned itself to 1.49.3 only, then spent the following release adapting. It now requires r4ss 1.50.0 and above and has moved to native R pipes.

Read the full ss3diags trajectory →

quantities vs ss3diags: editorial side-by-side

Q
quantities
ANALYTICS
0.0

The glue package that makes R carry units and uncertainty through the same calculation.

◆ Current state

quantities combines the units and errors packages into one class so values keep both their measurement units and their uncertainty through arithmetic, subsetting and data frame operations. Recent releases have been narrow: fixes to the covariance and correlation implementations, and performance work on the data.frame methods. Most of the release traffic is coordination with its two parent packages.

◆ Where it's heading

The design settled with 0.2.0, which made uncertainty unit-aware and added correlation and covariance support for quantities objects. Since then the package behaves like the integration layer it is — releasing when units, errors, dplyr or ggplot2 shift underneath it rather than on its own schedule. Several releases consist only of test repairs against upstream changes.

◆ Prediction

Expect the next release to follow a units or errors change rather than introduce new behaviour of its own.

S
ss3diags
ANALYTICS
0.0

A fisheries diagnostics package that lives and dies by one upstream dependency.

◆ Current state

ss3diags provides residual, retrospective and hindcast cross-validation diagnostics for Stock Synthesis models, sitting directly on top of r4ss. Its recent history is dominated by that dependency: when r4ss 1.50.0 renamed columns across its read and write functions, ss3diags pinned itself to 1.49.3 only, then spent the following release adapting. It now requires r4ss 1.50.0 and above and has moved to native R pipes.

◆ Where it's heading

The package is a downstream consumer whose release schedule is largely dictated by NOAA's r4ss. Between compatibility passes it has been shifting documentation from loose cookbook scripts into proper vignettes and shedding bundled Rdata in favour of objects generated at build time. Note that 2.0.3 and 2.1.0 were published the same day, so version order in this feed does not track chronology.

◆ Prediction

The next release most likely follows the next breaking r4ss change; between those, expect continued vignette and parameter-validation work.

Alternatives to quantities and ss3diags

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 quantities or ss3diags.

See all quantities alternatives → · See all ss3diags alternatives →

Recent activity from quantities and ss3diags

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1y agoss3diagsAdapts to r4ss 1.50.0 and drops the local binary fetcher
  2. 1y agoquantitiesFixes covariance and correlation implementations
  3. 1y agoss3diagsPins r4ss to 1.49.3 after upstream breaking changes
  4. 2y agoquantitiesFaster data.frame methods
  5. 2y agoss3diagsVignette tutorials replace cookbook scripts
  6. 3y agoss3diagsSSdeltaMVLN gains variance-covariance and bias options
  7. 3y agoquantitiesTest fixes for an upstream units change
  8. 3y agoquantitiesUncertainty becomes unit-aware; adds correlation support
  9. 3y agoss3diagsAligns with CRAN r4ss 1.44.0 and shared CI workflows
  10. 3y agoss3diagsSSrmse() split out as a standalone calculation
  11. 5y agoquantitiesCompatibility fix for units 0.7-0
  12. 6y agoquantitiesFixes uncertainty propagation for offset unit conversions

Frequently asked questions

What is the difference between quantities and ss3diags?

Both compete on the same themes — r-package — within Analytics. quantities and ss3diags 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 quantities better than ss3diags?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. quantities and ss3diags 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 quantities?

Top quantities alternatives in Analytics are ranked by recent ship velocity. Browse the "quantities alternatives" section above for the current picks, or visit /alternatives/quantities for the full list with editorial commentary on each.

What are the best alternatives to ss3diags?

Top ss3diags alternatives in Analytics are ranked by recent ship velocity. Browse the "ss3diags alternatives" section above for the current picks, or visit /alternatives/ss3diags for the full list with editorial commentary on each.