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Comparison · Analytics
aniprocess vs haze
A side-by-side editorial comparison of aniprocess and haze — release velocity, themes, recent moves, and the top alternatives to consider.
aniprocess vs haze: at a glance
What is aniprocess?
aniprocess rebuilt its filter API into three tiers and removed the old one outright.
aniprocess is the signal-processing half of the animovement ecosystem for animal movement data — smoothing, outlier flagging and gap handling for tracking coordinates. Version 0.3.0 restructured the entire public interface into three tiers: bare functions over a vector or a frame of coordinate columns, *_with() to select a method by name, and *_across() to apply one to a whole aniframe. Two functions were removed rather than deprecated, and argument names were normalized across the package.
What is haze?
Four dormant years end with a modernization pass and an off-by-one fix in the C++ core
haze does nearest-neighbour smoothing and k-d tree interpolation on brain surface meshes. It sat untouched from April 2022 until July 2026, when a single release modernized it for current R versions and corrected an off-by-one error in the C++ code. It is not on CRAN and never will be — the package exceeds 50MB against CRAN's 5MB ceiling, a constraint its own initial release notes acknowledge.
aniprocess vs haze: editorial side-by-side
aniprocess
3.8ANALYTICS
aniprocess rebuilt its filter API into three tiers and removed the old one outright.
◆ Current state
aniprocess is the signal-processing half of the animovement ecosystem for animal movement data — smoothing, outlier flagging and gap handling for tracking coordinates. Version 0.3.0 restructured the entire public interface into three tiers: bare functions over a vector or a frame of coordinate columns, *_with() to select a method by name, and *_across() to apply one to a whole aniframe. Two functions were removed rather than deprecated, and argument names were normalized across the package.
◆ Where it's heading
The redesign pushes aniframe metadata into the processing layer — *_across() reads sampling rate and the time column off the object instead of asking the caller, which is the division of labour aniframe's own class work assumes. Defaults are shifting toward not destroying information: filters preserve gaps unless inferring across them is the point, and a missing confidence score now warns rather than being read as a poor one. The bug fixes tell a consistent per-group story, with speed computed within each track so a step never forms across a track boundary.
◆ Prediction
With the across-style API landed and issue #29 (filter_by_pose) still open, the next release most likely extends the same three-tier pattern to pose data rather than adding more filters.
haze
2.5ANALYTICS
Four dormant years end with a modernization pass and an off-by-one fix in the C++ core
◆ Current state
haze does nearest-neighbour smoothing and k-d tree interpolation on brain surface meshes. It sat untouched from April 2022 until July 2026, when a single release modernized it for current R versions and corrected an off-by-one error in the C++ code. It is not on CRAN and never will be — the package exceeds 50MB against CRAN's 5MB ceiling, a constraint its own initial release notes acknowledge.
◆ Where it's heading
The July 2026 release arrived 56 minutes after its sibling regfusionr 0.3.0 from the same maintainer, which is the tell: this is a maintainer sweeping a set of related neuroimaging packages back into working order, not independent development on haze itself. haze is the dependency, regfusionr the consumer, and the substantive work sits on the regfusionr side. The off-by-one correction is the only change here that alters results.
◆ Prediction
Expect haze to move only when a downstream dfsp-spirit package needs it to — its cadence is driven by the sibling packages, not by its own roadmap.
Alternatives to aniprocess and haze
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 aniprocess or haze.
quanteda
Text analysis in R keeps optimising its token internals — and builds a path out to torch
moderndive
The ModernDive teaching package learns to render inside the browser that runs its own textbook
glmbayes
A GPU-accelerated Bayesian GLM package buys its way into the standard R Bayesian toolchain
hydroloom
USGS puts a type system over its river network toolkit so errors surface at dispatch
chromConverter
The chromatography file-format translator keeps absorbing vendor formats one release at a time
See all aniprocess alternatives → · See all haze alternatives →
Recent activity from aniprocess and haze
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoaniprocessThree-tier filter API; filter_aniframe() removed ⚡
- 18d agohazeVersion 0.3.0 -- Fixes and modernization
- 3mo agoaniprocessCCMA, excursion and Gaussian filters; FFT passband fix
- 4y agohazev0.2.0 -- kdtrees
- 4y agohazev0.1.0: Initial release
Frequently asked questions
What is the difference between aniprocess and haze?
They serve adjacent needs but don't currently overlap on shipped themes. aniprocess is currently shipping more aggressively (velocity 3.8 vs 2.5), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is aniprocess better than haze?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. aniprocess is currently shipping more aggressively (velocity 3.8 vs 2.5), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to aniprocess?
Top aniprocess alternatives in Analytics are ranked by recent ship velocity. Browse the "aniprocess alternatives" section above for the current picks, or visit /alternatives/aniprocess for the full list with editorial commentary on each.
What are the best alternatives to haze?
Top haze alternatives in Analytics are ranked by recent ship velocity. Browse the "haze alternatives" section above for the current picks, or visit /alternatives/haze for the full list with editorial commentary on each.