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Comparison · Analytics
cairo vs NWCTrends
A side-by-side editorial comparison of cairo and NWCTrends — release velocity, themes, recent moves, and the top alternatives to consider.
cairo vs NWCTrends: at a glance
What is cairo?
Cairo finally catches R's graphics engine, all the way to GE API 16.
Cairo is the R device that renders plots through the cairo library, and until 1.7-0 it lagged R's own graphics engine by several API generations. That release closes the gap to GE API 16 (R 4.5.0), adding fill patterns, masks and groups. The releases before it were maintenance: a segfault shim for grid, a bashism removal in configure, and Windows font and build fixes.
What is NWCTrends?
The salmon status-review trend package, maintained one federal review cycle at a time
NWCTrends fits multivariate state-space trend models to Pacific salmon population data and generates the tables and figures used in NOAA Northwest Fisheries Science Center viability and status reviews. Its release history maps onto those review cycles rather than a development calendar: v1.0 carries the 2015 review code, v1.25 the 2020 review, v1.30 the changes since. The 2026 v1.31 is internal restructuring and a dependency swap.
cairo vs NWCTrends: editorial side-by-side
cairo
0.0ANALYTICS
Cairo finally catches R's graphics engine, all the way to GE API 16.
◆ Current state
Cairo is the R device that renders plots through the cairo library, and until 1.7-0 it lagged R's own graphics engine by several API generations. That release closes the gap to GE API 16 (R 4.5.0), adding fill patterns, masks and groups. The releases before it were maintenance: a segfault shim for grid, a bashism removal in configure, and Windows font and build fixes.
◆ Where it's heading
The arc is catch-up, executed one API generation at a time. Glyph rendering arrived in 1.6-3, GE 15 stubs in 1.6-5 existed only to stop grid from segfaulting, and 1.7-0 delivers the real GE 13/14/16 feature set rather than placeholders. Alongside that, dropping the CAIROGD_VER C API and the mkdist step means the package now builds with plain R CMD build, which reads as deliberate reduction of maintenance overhead.
◆ Prediction
Expect the next releases to be corrective rather than additive: the entries show every API adoption here has been followed by a fix release, and patterns, masks and groups are a much larger surface than glyphs were.
NWCTrends
0.0ANALYTICS
The salmon status-review trend package, maintained one federal review cycle at a time
◆ Current state
NWCTrends fits multivariate state-space trend models to Pacific salmon population data and generates the tables and figures used in NOAA Northwest Fisheries Science Center viability and status reviews. Its release history maps onto those review cycles rather than a development calendar: v1.0 carries the 2015 review code, v1.25 the 2020 review, v1.30 the changes since. The 2026 v1.31 is internal restructuring and a dependency swap.
◆ Where it's heading
Development is driven by reproducibility of a specific government reporting product, so most work goes into making the report generation configurable and the fitting assumptions explicit rather than into new modelling. The 2020 cycle removed hard-coded per-population hacks and made the fitting window an explicit argument; the 2023 cycle moved plot styling into package options and clarified how missing data and zeros are handled in the published tables.
◆ Prediction
The cadence suggests the next substantive release arrives with the next status review rather than before it, most likely continuing the move of report parameters out of function signatures and into structured configuration.
Alternatives to cairo and NWCTrends
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 cairo or NWCTrends.
geodist
geodist stays dependency-free and fast, and warns you when 'cheap' distances stop being honest.
errors
errors keeps making uncertainty print the way each scientific field expects.
CMAQ
CMAQ went global in v5.5, and has been patching that surface ever since.
enpls
enpls has not changed its statistics since 2016 — only its website, twice.
grex
grex is a lookup table with a version number — it ships when the annotation moves.
See all cairo alternatives → · See all NWCTrends alternatives →
Recent activity from cairo and NWCTrends
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7mo agoNWCTrendsReport params extracted to a list; gdata replaced with readxl
- 9mo agocairoCairo adds fill patterns, masks and groups (GE API 16) ⚡
- 11mo agocairoCairo 1.6-4: configure cleanup, locatorBell dropped on X11
- 11mo agocairoCairo 1.6-5 stubs GE 15 to stop grid segfaulting
- 2y agocairoCairo 1.6-2
- 2y agocairoCairo 1.6-3 adds glyph rendering for grid.glyph()
- 3y agoNWCTrendsPlot options move into package globals; figure data exported to CSV
- 5y agoNWCTrendsExplicit fitting window replaces implicit full-data fits
- 5y agoNWCTrendsInitial release packaging the 2015 status review code
Frequently asked questions
What is the difference between cairo and NWCTrends?
They serve adjacent needs but don't currently overlap on shipped themes. cairo and NWCTrends 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 cairo better than NWCTrends?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. cairo and NWCTrends 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 cairo?
Top cairo alternatives in Analytics are ranked by recent ship velocity. Browse the "cairo alternatives" section above for the current picks, or visit /alternatives/cairo-r for the full list with editorial commentary on each.
What are the best alternatives to NWCTrends?
Top NWCTrends alternatives in Analytics are ranked by recent ship velocity. Browse the "NWCTrends alternatives" section above for the current picks, or visit /alternatives/nwctrends-r for the full list with editorial commentary on each.