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CatastRoNav vs n1qn1c

A side-by-side editorial comparison of CatastRoNav and n1qn1c — release velocity, themes, recent moves, and the top alternatives to consider.

CatastRoNav vs n1qn1c: at a glance

FeatureCatastRoNavn1qn1c
SectorAnalyticsAnalytics
Velocity score0.00.0
Sparks · 30d00
Top themesspatial-data, open-government-data, spain, wmsnumerical-optimization, quasi-newton, thread-safety, memory-safety
Last editorial update2h ago1h ago
WebsiteVisit →Visit →

What is CatastRoNav?

Navarre's cadastre client finally reaches feature parity with its bigger Spanish sibling.

CatastRoNav wraps the Cadastre of Navarre, a Spanish region that publishes its own cadastral services separately from the national system. Until 1.0.0 the package could only fetch cadastral parcels via ATOM; it now retrieves buildings and addresses through ATOM as well and adds WMS INSPIRE layer access through catrnav_wms_get_layer(). The same release relicenses to GPL-2, moves requests to httr2 with retries and switches messaging to cli.

Read the full CatastRoNav trajectory →

What is n1qn1c?

A Fortran-descended optimizer got thread-safe, then found two flags that never worked.

n1qn1c is a quasi-Newton optimization routine translated from Fortran to C, used as a solver backend by the nlmixr2 modeling stack rather than called directly by most users. Its two 2026 releases are a concentrated safety pass: global state converted to thread_local, static removed from local variables in the translated code, integer overflow guards added, and memory leaks closed in the R callback wrappers — plus the gcc-asan and valgrind fixes CRAN asked for.

Read the full n1qn1c trajectory →

CatastRoNav vs n1qn1c: editorial side-by-side

C
CatastRoNav
ANALYTICS
0.0

Navarre's cadastre client finally reaches feature parity with its bigger Spanish sibling.

◆ Current state

CatastRoNav wraps the Cadastre of Navarre, a Spanish region that publishes its own cadastral services separately from the national system. Until 1.0.0 the package could only fetch cadastral parcels via ATOM; it now retrieves buildings and addresses through ATOM as well and adds WMS INSPIRE layer access through catrnav_wms_get_layer(). The same release relicenses to GPL-2, moves requests to httr2 with retries and switches messaging to cli.

◆ Where it's heading

The package is being pulled into line with CatastRo, the maintainer's national-cadastre client: same transport, same UTF-8 normalization strategy, same option names falling back to the CatastRo equivalents. Coverage has been gated by what the Navarre Cadastre actually publishes — 0.1.0 said outright that further ATOM capabilities would arrive when the regional service made them available, and 1.0.0 is that promise landing.

◆ Prediction

Expect the next releases to track new Navarre service endpoints as they are published, and to inherit whatever maintenance pattern CatastRo adopts next.

N
n1qn1c
ANALYTICS
0.0

A Fortran-descended optimizer got thread-safe, then found two flags that never worked.

◆ Current state

n1qn1c is a quasi-Newton optimization routine translated from Fortran to C, used as a solver backend by the nlmixr2 modeling stack rather than called directly by most users. Its two 2026 releases are a concentrated safety pass: global state converted to thread_local, static removed from local variables in the translated code, integer overflow guards added, and memory leaks closed in the R callback wrappers — plus the gcc-asan and valgrind fixes CRAN asked for.

◆ Where it's heading

The package is being hardened for use inside a parallel modeling framework rather than extended. The audit that produced the thread-safety work also surfaced two plain bugs in features users would have assumed worked: restart = TRUE left the mode at 2 instead of 3 because of a typo, and assign = TRUE referenced the wrong field name so the compressed Hessian was never written to the supplied environment. Earlier work points the same direction — the 6.0.1-12 function-pointer interface exists so nlmixr2est does not need resubmission when this package changes.

◆ Prediction

Expect further memory-safety and sanitizer work rather than algorithmic change; a Fortran-translated numerical core under CRAN's checking regime generates that kind of release indefinitely.

Alternatives to CatastRoNav and n1qn1c

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 CatastRoNav or n1qn1c.

See all CatastRoNav alternatives → · See all n1qn1c alternatives →

Recent activity from CatastRoNav and n1qn1c

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1mo agoCatastRoNavBuildings, addresses and WMS layers arrive in 1.0.0
  2. 4mo agon1qn1crestart and assign flags fixed; sanitizer issues cleared
  3. 4mo agon1qn1cGlobal state converted to thread_local
  4. 1y agon1qn1cFunction-pointer API decouples nlmixr2est releases
  5. 2y agoCatastRoNavATOM parcel retrieval and a caching system
  6. 3y agoCatastRoNavGeometry validity fix for returned sf objects
  7. 3y agoCatastRoNavFirst release opens the Navarre cadastre to R

Frequently asked questions

What is the difference between CatastRoNav and n1qn1c?

They serve adjacent needs but don't currently overlap on shipped themes. CatastRoNav and n1qn1c 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 CatastRoNav better than n1qn1c?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. CatastRoNav and n1qn1c 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 CatastRoNav?

Top CatastRoNav alternatives in Analytics are ranked by recent ship velocity. Browse the "CatastRoNav alternatives" section above for the current picks, or visit /alternatives/catastronav for the full list with editorial commentary on each.

What are the best alternatives to n1qn1c?

Top n1qn1c alternatives in Analytics are ranked by recent ship velocity. Browse the "n1qn1c alternatives" section above for the current picks, or visit /alternatives/n1qn1c for the full list with editorial commentary on each.