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Comparison · Analytics
mutagen vs tidytransit
A side-by-side editorial comparison of mutagen and tidytransit — release velocity, themes, recent moves, and the top alternatives to consider.
mutagen vs tidytransit: at a glance
What is mutagen?
A young package porting Stata's egen row-wise helpers to the tidyverse, one function per release
mutagen provides row-wise column-generation helpers for R data frames in the spirit of Stata's egen — gen_rowmean(), gen_rowsum(), gen_rowsd(), gen_rownonmiss() and about a dozen siblings. It reached 0.5.0 within three months of its first release, adding two or three functions each time. The most recent release adds gen_coldiff() and renames two functions to fit the naming scheme.
What is tidytransit?
tidytransit tracks the GTFS spec as it grows, one reader and one router feature at a time.
tidytransit reads GTFS transit feeds into tidy data frames and computes travel times using a RAPTOR implementation. Recent work splits between the reader keeping pace with the spec — locations.geojson in 1.7.0, empty strings parsed as NA in 1.8.0 — and the router gaining realism, most recently in-seat transfers. Feed specifications are now pulled from the automatically parsed GTFS reference rather than maintained by hand.
mutagen vs tidytransit: editorial side-by-side
mutagen
0.0ANALYTICS
A young package porting Stata's egen row-wise helpers to the tidyverse, one function per release
◆ Current state
mutagen provides row-wise column-generation helpers for R data frames in the spirit of Stata's egen — gen_rowmean(), gen_rowsum(), gen_rowsd(), gen_rownonmiss() and about a dozen siblings. It reached 0.5.0 within three months of its first release, adding two or three functions each time. The most recent release adds gen_coldiff() and renames two functions to fit the naming scheme.
◆ Where it's heading
The package is filling out a known surface rather than discovering one: the reference implementation exists in Stata, so development is a matter of working through the list. Alongside that, the naming convention is still settling — gen_rowmatch became gen_rowany, gen_percent became gen_colpercent, gen_na_listcol became gen_listcol_na — which is normal for a pre-1.0 package but means callers should expect further renames. Contributions are arriving from several first-time contributors.
◆ Prediction
The gen_col* prefix has only two members against a dozen gen_row* functions, so column-wise coverage is the obvious gap; expect it to fill before the naming stabilises for a 1.0.
tidytransit
0.0ANALYTICS
tidytransit tracks the GTFS spec as it grows, one reader and one router feature at a time.
◆ Current state
tidytransit reads GTFS transit feeds into tidy data frames and computes travel times using a RAPTOR implementation. Recent work splits between the reader keeping pace with the spec — locations.geojson in 1.7.0, empty strings parsed as NA in 1.8.0 — and the router gaining realism, most recently in-seat transfers. Feed specifications are now pulled from the automatically parsed GTFS reference rather than maintained by hand.
◆ Where it's heading
The package has settled into tracking an external standard, which is why the changelog reads as a sequence of spec conformance items rather than a roadmap. Parsing responsibility keeps shifting outward to gtfsio, and data sources have moved with the ecosystem, from the retired transitfeeds API to MobilityData. Router changes are rarer than reader changes but land in the same releases.
◆ Prediction
Further GTFS spec features are the safest expectation, with GTFS-Flex the likeliest area now that locations.geojson reading is in place.
Alternatives to mutagen and tidytransit
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 mutagen or tidytransit.
EvoPhylo
EvoPhylo added BEAST2 alongside MrBayes, then went quiet for two years.
treespace
treespace ships once every year or two, and only when CRAN or a user forces it.
Rpath
Rpath 1.1.0 learns to read Ecopath's own files, easing migration off the desktop tool.
TAF
TAF keeps turning ICES stock assessments into reproducible, dependency-pinned projects.
parallelDist
parallelDist is in pure preservation mode — one build fix every few years.
See all mutagen alternatives → · See all tidytransit alternatives →
Recent activity from mutagen and tidytransit
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6mo agotidytransitIn-seat transfers supported in raptor() and travel_times()
- 8mo agomutagengen_coldiff() added; two functions renamed for consistency
- 9mo agomutagengen_rowsum() and gen_rowsd() added
- 9mo agomutagengen_rownonmiss() and gen_rowall() added
- 9mo agomutagenRow mean, median and missingness helpers; gen_rowmatch renamed
- 11mo agomutagenFirst release with the row-wise gen_* family
- 11mo agotidytransitstop_group_distances() no longer ignores the by parameter
- 1y agotidytransitlocations.geojson reading; specs parsed from the GTFS reference
- 2y agotidytransitfare_media_id added to fare_products spec
- 3y agotidytransitinterpolate_stop_times() added; router updated
- 3y agotidytransitDuplicated primary key check improved
Frequently asked questions
What is the difference between mutagen and tidytransit?
They serve adjacent needs but don't currently overlap on shipped themes. mutagen and tidytransit 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 mutagen better than tidytransit?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. mutagen and tidytransit 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 mutagen?
Top mutagen alternatives in Analytics are ranked by recent ship velocity. Browse the "mutagen alternatives" section above for the current picks, or visit /alternatives/mutagen-r for the full list with editorial commentary on each.
What are the best alternatives to tidytransit?
Top tidytransit alternatives in Analytics are ranked by recent ship velocity. Browse the "tidytransit alternatives" section above for the current picks, or visit /alternatives/tidytransit-r for the full list with editorial commentary on each.