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Comparison · Analytics
gcube vs qtl2fst
A side-by-side editorial comparison of gcube and qtl2fst — release velocity, themes, recent moves, and the top alternatives to consider.
gcube vs qtl2fst: at a glance
What is gcube?
gcube's recent releases are all packaging metadata, not simulation code
gcube simulates biodiversity data cubes — generating occurrence points, sampling them under configurable detection bias, and designating them to a grid — as a testbed for the B-Cubed project's indicator tooling. The visible release history is almost entirely metadata and release-automation work: Zenodo grant IDs, ROR URL fixes, publisher fields, funder and rights-holder descriptions. The simulation functionality itself is not what these entries are about.
What is qtl2fst?
The out-of-memory backend for R/qtl2, feature-complete since 2020 and now purely on upkeep
qtl2fst backs R/qtl2 genotype probabilities with on-disk fst files so large crosses don't have to fit in RAM. Its defining release was 0.22 in 2020, which added calc_genoprob_fst() and genoprob_to_alleleprob_fst() to fuse calculation and storage in one step. The five releases since are documentation links, directory-creation robustness, a Windows example fix, and — in 0.32 — a change to how cores=0 is interpreted.
gcube vs qtl2fst: editorial side-by-side
gcube
0.0ANALYTICS
gcube's recent releases are all packaging metadata, not simulation code
◆ Current state
gcube simulates biodiversity data cubes — generating occurrence points, sampling them under configurable detection bias, and designating them to a grid — as a testbed for the B-Cubed project's indicator tooling. The visible release history is almost entirely metadata and release-automation work: Zenodo grant IDs, ROR URL fixes, publisher fields, funder and rights-holder descriptions. The simulation functionality itself is not what these entries are about.
◆ Where it's heading
The February 2026 cluster reads as a package wiring up its archival identity rather than developing: four releases in four days, one of them explicitly a test of the GitHub release path. That is characteristic of research software preparing to be cited — a Zenodo DOI, correct funder attribution and a checklist-compliant description are the deliverables when the funder requires them. Substantive work on mapping functions and grid designation appears earlier and only through tutorial fixes.
◆ Prediction
With the Zenodo integration and metadata now settled, expect attention to return to the simulation functions themselves, most likely driven by what the sibling indicator packages need to test against.
qtl2fst
0.0ANALYTICS
The out-of-memory backend for R/qtl2, feature-complete since 2020 and now purely on upkeep
◆ Current state
qtl2fst backs R/qtl2 genotype probabilities with on-disk fst files so large crosses don't have to fit in RAM. Its defining release was 0.22 in 2020, which added calc_genoprob_fst() and genoprob_to_alleleprob_fst() to fuse calculation and storage in one step. The five releases since are documentation links, directory-creation robustness, a Windows example fix, and — in 0.32 — a change to how cores=0 is interpreted.
◆ Where it's heading
The package has settled into the role of a stable satellite of R/qtl2: it tracks the parent package's conventions rather than setting its own. The cores=0 change in 0.32 arrived alongside the identical change in qtl2convert, so the parallel-computing default is being standardized across the maintainer's packages at once. Release intervals have stretched from months to years.
◆ Prediction
Further releases will most likely mirror changes originating in R/qtl2 or CRAN checks, in the same follow-the-parent pattern as 0.24 and 0.32.
Alternatives to gcube and qtl2fst
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 gcube or qtl2fst.
cubist
The R port of Quinlan's Cubist gets reproducibility fixes, not new modelling
ggstats
ggstats keeps widening what a coefficient or Likert plot can be
ecodive
ecodive rebuilt itself into a broad diversity-metric library, breaking as it went
simStateSpace
State-space data simulation for R, filled in one function at a time
rollama
rollama turns a local-LLM wrapper into an instrument for reproducible annotation
See all gcube alternatives → · See all qtl2fst alternatives →
Recent activity from gcube and qtl2fst
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1mo agoqtl2fstcores=0 now leaves one core free instead of taking all
- 5mo agogcubeGrant ID no longer uses a DOI
- 5mo agogcubeZenodo grant ID, publisher metadata and a ROR URL fix
- 6mo agogcubeRelease v1.4.2
- 7mo agogcubeRelease v1.4.1
- 7mo agogcubeInstallation instructions, spelling and funder descriptions
- 1y agogcubeRelease v1.3.7
- 1y agoqtl2fstWindows fix for the replace_path() example
- 2y agoqtl2fstDocumentation link fix
- 4y agoqtl2fstCreates missing directories instead of erroring out
- 5y agoqtl2fstTest coverage for qtl2 functions against fst-backed probabilities
- 6y agoqtl2fstDocumentation and metadata cleanup for CRAN
Frequently asked questions
What is the difference between gcube and qtl2fst?
They serve adjacent needs but don't currently overlap on shipped themes. gcube and qtl2fst 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 gcube better than qtl2fst?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. gcube and qtl2fst 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 gcube?
Top gcube alternatives in Analytics are ranked by recent ship velocity. Browse the "gcube alternatives" section above for the current picks, or visit /alternatives/gcube for the full list with editorial commentary on each.
What are the best alternatives to qtl2fst?
Top qtl2fst alternatives in Analytics are ranked by recent ship velocity. Browse the "qtl2fst alternatives" section above for the current picks, or visit /alternatives/qtl2fst for the full list with editorial commentary on each.