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Comparison · Infra & APIs

fastpos vs TrendLSW

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

fastpos vs TrendLSW: at a glance

FeaturefastposTrendLSW
SectorInfra & APIsInfra & APIs
Velocity score0.00.0
Sparks · 30d00
Top themessimulation, correlation, sample-size, rcpptime-series, wavelets, defaults, plotting
Last editorial update23h ago1h ago
WebsiteVisit →Visit →

What is fastpos?

Dormant three years, then a two-line release nobody using it would notice

fastpos finds the critical point of stability for a Pearson correlation, a simulation problem whose C++ implementation is the entire reason the package exists. Its substantive work concluded in 2022 with 0.5.0, the release prepared during R Journal review, which renamed the precision parameters, moved multicore work to pbapply and let users set corridor limits directly. After three years of silence, 0.6.0 removes an internal restriction to cpp11 and changes index_pop to an integer.

Read the full fastpos trajectory →

What is TrendLSW?

Wavelet trend estimation tightens the defaults it shipped with.

TrendLSW estimates trend and evolutionary wavelet spectrum for locally stationary time series through a single TLSW() entry point. Its history since the first CRAN appearance is short and centres on defaults and plotting around that function, plus one dataset addition. The latest entry carries both the 1.0.4 and 1.0.3 notes in one body.

Read the full TrendLSW trajectory →

fastpos vs TrendLSW: editorial side-by-side

F
fastpos
INFRA · APIS
0.0

Dormant three years, then a two-line release nobody using it would notice

◆ Current state

fastpos finds the critical point of stability for a Pearson correlation, a simulation problem whose C++ implementation is the entire reason the package exists. Its substantive work concluded in 2022 with 0.5.0, the release prepared during R Journal review, which renamed the precision parameters, moved multicore work to pbapply and let users set corridor limits directly. After three years of silence, 0.6.0 removes an internal restriction to cpp11 and changes index_pop to an integer.

◆ Where it's heading

This is a finished piece of research software in low-effort upkeep. The changelog's centre of gravity is the R Journal review process, and once that concluded the package stopped changing. The single release since is toolchain work of the kind that keeps a package compiling rather than anything a user would see.

◆ Prediction

Expect nothing beyond occasional compilation or CRAN-check fixes unless the accompanying paper draws requests for other correlation types or resampling schemes.

T
TrendLSW
INFRA · APIS
0.0

Wavelet trend estimation tightens the defaults it shipped with.

◆ Current state

TrendLSW estimates trend and evolutionary wavelet spectrum for locally stationary time series through a single TLSW() entry point. Its history since the first CRAN appearance is short and centres on defaults and plotting around that function, plus one dataset addition. The latest entry carries both the 1.0.4 and 1.0.3 notes in one body.

◆ Where it's heading

The package has moved from getting onto CRAN to correcting the choices it launched with: the spectrum filter defaults were swapped to their trend counterparts, the plot.CI switch was removed in favour of inferring it from what was actually computed, and an example was shrunk to fit check timings. This is consolidation around a stable API rather than expansion.

◆ Prediction

Further releases most likely continue tuning TLSW() defaults and plot behaviour; the entries show no work toward new estimators.

Alternatives to fastpos and TrendLSW

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 fastpos or TrendLSW.

See all fastpos alternatives → · See all TrendLSW alternatives →

Recent activity from fastpos and TrendLSW

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

  1. 8mo agoTrendLSWTrend filter defaults replace spectrum defaults; plot.CI dropped
  2. 10mo agofastposcpp11 restriction removed; index_pop now an integer
  3. 2y agoTrendLSWNew z.acc and z.labels datasets shipped with the package
  4. 2y agoTrendLSWDescription field and plot.TLSW documentation fixes
  5. 4y agofastposMulticore fix for pbmcapply; Windows limited to one core
  6. 4y agofastposR Journal review release: renamed precision parameters, manual corridor limits
  7. 5y agofastposMore informative test failures; interactive-only progress bars
  8. 6y agofastposMulticore support via the future package
  9. 6y agofastposExact-rho population generation and C++ progress bar fixes

Frequently asked questions

What is the difference between fastpos and TrendLSW?

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

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

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

What are the best alternatives to TrendLSW?

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