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Comparison · Infra & APIs

formr vs mmpca

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

formr vs mmpca: at a glance

Featureformrmmpca
SectorInfra & APIsInfra & APIs
Velocity score0.00.0
Sparks · 30d00
Top themessurvey-research, rest-api, cran-release, opencpucran, maintainership, rcpp, build-system
Last editorial update3h ago42m ago
WebsiteVisit →Visit →

What is formr?

formr's R client reached CRAN and moved its recommended path to the v1 REST API.

formr is the R-side client for formr.org, the open study framework used to run longitudinal and experience-sampling questionnaires. In May it reached CRAN for the first time, released in step with formr.org server v1.0.0, and the formr_api_* family built on the server's RESTful surface became the supported entry point. The three releases since have been repair work on the paths that move rendered output and API results.

Read the full formr trajectory →

What is mmpca?

Back from CRAN removal under a new maintainer, with the compiled layer rebuilt.

mmpca implements multiple matrix principal component analysis with a compiled GSL backend. The package spent time off CRAN, and its recent history is a rescue operation rather than a feature program: a new maintainer took it over, moved the native build path onto RcppGSL, and folded the hand-written C bindings into Rcpp. The two most recent entries landed the same day, one restoring the package and one clearing residual CRAN comments.

Read the full mmpca trajectory →

formr vs mmpca: editorial side-by-side

F
formr
INFRA · APIS
0.0

formr's R client reached CRAN and moved its recommended path to the v1 REST API.

◆ Current state

formr is the R-side client for formr.org, the open study framework used to run longitudinal and experience-sampling questionnaires. In May it reached CRAN for the first time, released in step with formr.org server v1.0.0, and the formr_api_* family built on the server's RESTful surface became the supported entry point. The three releases since have been repair work on the paths that move rendered output and API results.

◆ Where it's heading

The direction is consolidation around the v1 API while the legacy Classic path is left running but demoted in the vignette. The complication is that CRAN's requirements and the OpenCPU server's requirements pull against each other: CRAN review pushed rendering into tempdir() with random filenames, which broke rforms.org because the server fetches a fixed knit.html, and 1.1.2 had to put it back. The 1.2.0 note describes the same write-directory problem being solved in an OpenCPU-aware way rather than reverted, alongside making dependencies installable under WASM.

◆ Prediction

Two of the last three releases were regressions in the render path, so the OpenCPU-aware write directory in 1.2.0 is the change most likely to need follow-up. The Classic formr_results() path remains in the package with no removal date announced, and nothing in these entries indicates when that ends.

M
mmpca
INFRA · APIS
0.0

Back from CRAN removal under a new maintainer, with the compiled layer rebuilt.

◆ Current state

mmpca implements multiple matrix principal component analysis with a compiled GSL backend. The package spent time off CRAN, and its recent history is a rescue operation rather than a feature program: a new maintainer took it over, moved the native build path onto RcppGSL, and folded the hand-written C bindings into Rcpp. The two most recent entries landed the same day, one restoring the package and one clearing residual CRAN comments.

◆ Where it's heading

Work is concentrated on making the package installable and check-clean rather than on the decomposition itself. The version stamps run out of order, with 2.0.3 predating both 2.0.2 and 2.0.4 by three years, so the feed reads as an archive flush around the CRAN return. Nothing in the entries points at method-level work.

◆ Prediction

Expect maintenance releases that keep the compiled code passing CRAN checks; the entries give no signal about new decomposition features.

Alternatives to formr and mmpca

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 formr or mmpca.

See all formr alternatives → · See all mmpca alternatives →

Recent activity from formr and mmpca

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

  1. 1mo agoformrOpenCPU-aware render directory and WASM-installable dependencies
  2. 2mo agoformrHotfix: rendered output returns to knit.html
  3. 2mo agoformrcalculate items no longer coerced to NA by as.numeric()
  4. 2mo agoformrv1.0.0 — first CRAN release
  5. 8mo agommpcaMinor CRAN comments cleared to keep the package listed
  6. 8mo agommpcaBack on CRAN under a new maintainer, rebuilt on RcppGSL
  7. 3y agommpcaValgrind memory fixes and a maximum-iteration option

Frequently asked questions

What is the difference between formr and mmpca?

They serve adjacent needs but don't currently overlap on shipped themes. formr and mmpca 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 formr better than mmpca?

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

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

What are the best alternatives to mmpca?

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