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Comparison · Infra & APIs
ggh4x vs volcalc
A side-by-side editorial comparison of ggh4x and volcalc — release velocity, themes, recent moves, and the top alternatives to consider.
ggh4x vs volcalc: at a glance
What is ggh4x?
Handed its axis and legend guides to ggplot2 and legendry, and kept the facets
ggh4x is a set of ggplot2 extensions — nested and manual facets, per-facet scales, forced panel sizes, and statistics such as stat_difference() and stat_rle(). Its guide functions, once a substantial part of the package, are deprecated: 0.3.0 redirected users to ggplot2's own guide arguments and to the legendry package, and 0.3.1 made the deprecated functions return plain equivalents. What remains as this package's own territory is facetting and panel layout.
What is volcalc?
Rebuilt itself around SMILES and .mol input, then made the chemistry configurable
volcalc estimates the volatility of chemical compounds from their structure, implementing the SIMPOL.1 group-contribution method and the Meredith et al. variant. Version 2.0.0 severed the package from KEGG: calc_vol() takes .mol file paths or SMILES strings directly, is vectorized over multiple compounds, and the group-contribution maths was split into its own simpol1() function. Work since has been chemistry accuracy and configurability — the full set of SIMPOL.1 functional groups, volatility thresholds for clean atmosphere, polluted atmosphere or soil, user-supplied temperature, and a validate option returning NA when structure parsing looks suspect.
ggh4x vs volcalc: editorial side-by-side
ggh4x
0.0INFRA · APIS
Handed its axis and legend guides to ggplot2 and legendry, and kept the facets
◆ Current state
ggh4x is a set of ggplot2 extensions — nested and manual facets, per-facet scales, forced panel sizes, and statistics such as stat_difference() and stat_rle(). Its guide functions, once a substantial part of the package, are deprecated: 0.3.0 redirected users to ggplot2's own guide arguments and to the legendry package, and 0.3.1 made the deprecated functions return plain equivalents. What remains as this package's own territory is facetting and panel layout.
◆ Where it's heading
The handover was signalled well in advance. Version 0.2.5 set the guides' lifecycle to 'questioning' and said outright they might migrate to a new package once ggplot2 overhauled its guide system, and 0.3.0 executed that eighteen months later. Much of the rest of the changelog is anticipatory compatibility work for upcoming ggplot2 releases, the standing cost of being an extension package. Releases carry playful codenames that say nothing about their contents.
◆ Prediction
The deprecated guide functions are scheduled for removal in the next non-hotfix release, so expect that next; continued work should concentrate on facets and panel sizing, the areas neither ggplot2 nor legendry has absorbed.
volcalc
0.0INFRA · APIS
Rebuilt itself around SMILES and .mol input, then made the chemistry configurable
◆ Current state
volcalc estimates the volatility of chemical compounds from their structure, implementing the SIMPOL.1 group-contribution method and the Meredith et al. variant. Version 2.0.0 severed the package from KEGG: calc_vol() takes .mol file paths or SMILES strings directly, is vectorized over multiple compounds, and the group-contribution maths was split into its own simpol1() function. Work since has been chemistry accuracy and configurability — the full set of SIMPOL.1 functional groups, volatility thresholds for clean atmosphere, polluted atmosphere or soil, user-supplied temperature, and a validate option returning NA when structure parsing looks suspect.
◆ Where it's heading
The arc runs from a script tied to one database toward a general structure-to-volatility tool. Dropping KEGG from the core in 2.0.0, then removing KEGGREST as a dependency entirely in 2.2.0, took the package from volatility for KEGG compounds to volatility for any structure a user can supply. The accompanying manuscript published in 2023, and the changelog since has been careful about coefficient double-counting — amines and amides have each been corrected — which suggests the group definitions are the part under active scrutiny.
◆ Prediction
The smarts_simpol1 dataset added in 2.2.0 documents how functional groups are defined, pointing toward further estimation methods alongside SIMPOL.1 and Meredith; splitting simpol1() out in 2.0.0 was stated to be groundwork for exactly that.
Alternatives to ggh4x and volcalc
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See all ggh4x alternatives → · See all volcalc alternatives →
Recent activity from ggh4x and volcalc
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1y agoggh4xDeprecated guides now return plain ggplot2 equivalents
- 1y agovolcalcParsing validation, user-supplied temperature, KEGGREST dropped
- 1y agoggh4xGuide functions deprecated in favour of ggplot2 and legendry ⚡
- 2y agoggh4xCRAN note fix and two facet bug fixes
- 2y agoggh4xAnticipatory changes for ggplot2 3.5.0
- 2y agovolcalcAuthorship and citation updates
- 2y agovolcalcSMILES input, environment-specific thresholds, missing functional groups
- 2y agovolcalcRebuilt around .mol and SMILES input; SIMPOL.1 split into simpol1() ⚡
- 3y agoggh4xGuides marked 'questioning'; render_empty and panel-area sizing
- 3y agovolcalcAmines group removed to stop double-counting with primary amines
- 3y agovolcalcbug fix: standard temperature
- 3y agoggh4xSemi-discrete manual scales and facet whitespace handling
Frequently asked questions
What is the difference between ggh4x and volcalc?
They serve adjacent needs but don't currently overlap on shipped themes. ggh4x and volcalc 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 ggh4x better than volcalc?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. ggh4x and volcalc 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 ggh4x?
Top ggh4x alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "ggh4x alternatives" section above for the current picks, or visit /alternatives/ggh4x for the full list with editorial commentary on each.
What are the best alternatives to volcalc?
Top volcalc alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "volcalc alternatives" section above for the current picks, or visit /alternatives/volcalc for the full list with editorial commentary on each.