R Observatory: Metrics for FRK version 2.3.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

FRK

2.3.2Package record

Fixed Rank Kriging

1packages depend

8.1Kdownloads / year

44.7%test coverage

8/13flavors OK

Overview

About

Maintained by Andrew Zammit-MangionCRAN page ↗GitHub ↗Website ↗Issues ↗

A tool for spatial/spatio-temporal modelling and prediction with large datasets. The approach models the field, and hence the covariance function, using a set of basis functions. This fixed-rank basis-function representation facilitates the modelling of big data, and the method naturally allows for non-stationary, anisotropic covariance functions. Discretisation of the spatial domain into so-called basic areal units (BAUs) facilitates the use of observations with varying support (i.e., both point-referenced and areal supports, potentially simultaneously), and prediction over arbitrary user-specified regions. `FRK` also supports inference over various manifolds, including the 2D plane and 3D sphere, and it provides helper functions to model, fit, predict, and plot with relative ease. Version 2.0.0 and above also supports the modelling of non-Gaussian data (e.g., Poisson, binomial, negative-binomial, gamma, and inverse-Gaussian) by employing a generalised linear mixed model (GLMM) framework. Zammit-Mangion and Cressie doi:10.18637/jss.v098.i04 describe `FRK` in a Gaussian setting, and detail its use of basis functions and BAUs, while Sainsbury-Dale, Zammit-Mangion, and Cressie doi:10.18637/jss.v108.i10 describe `FRK` in a non-Gaussian setting; two vignettes are available that summarise these papers and provide additional examples.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("FRK", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("andrewzm/FRK")

Development version from andrewzm/FRK. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-frk

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-FRK

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-FRK

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

2ERROR3NOTE8OK

Check messages

ERRORre-building of vignette outputsr-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc

r-devel-linux-x86_64-fedora-clang

Error(s) in re-building vignettes:
--- re-building ‘FRK_intro.Rnw’ using knitr
OMP: Warning #96: Cannot form a team with 28 threads, using 2 instead.
OMP: Hint Consider unsetting KMP_DEVICE_THREAD_LIMIT (KMP_ALL_THREADS), KMP_TEAMS_THREAD_LIMIT, and OMP_THREAD_LIMIT (if any are set).
--- re-building ‘FRK_non-Gaussian.Rnw’ using knitr
--- finished re-building ‘FRK_non-Gaussian.Rnw’

SUMMARY: processing the following file failed:
  ‘FRK_intro.Rnw’

Error: Vignette re-building failed.
Execution halted

r-devel-linux-x86_64-fedora-gcc

Error(s) in re-building vignettes:
--- re-building ‘FRK_intro.Rnw’ using knitr
--- re-building ‘FRK_non-Gaussian.Rnw’ using knitr
--- finished re-building ‘FRK_non-Gaussian.Rnw’

SUMMARY: processing the following file failed:
  ‘FRK_intro.Rnw’

Error: Vignette re-building failed.
Execution halted

ERRORtestsr-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc

r-devel-linux-x86_64-fedora-clang

Running ‘testthat.R’ [90m/53m]
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > ops <- options("crayon.enabled" = FALSE)
  > library(testthat)
  > require("covr")
  Loading required package: covr
  > 
  > test_check("FRK")
  Loading required package: FRK
  
  Attaching package: 'FRK'
  
  The following object is masked from 'package:stats':
  
      simulate
  
  NOTE: In FRK >2.0 simple_kriging_fixed = FALSE by default, and hence
        universal kriging is done by default. However this is only the case when
        method = 'TMB'. When method = 'EM', simple kriging is done, irrespective of
        what the argument simple_kriging_fixed is set to.
  
    |                                                                            
    |                                                                      |   0%
    |                                                                            
    |=======================                                             
...[truncated]...
                                                                    
    |=======================                                               |  33%
    |                                                                            
    |===============================================                       |  67%
    |                                                                            
    |======================================================================| 100%
  Maximum EM iterations reached
  Averaging over polygons...
  NOTE: In FRK >2.0 simple_kriging_fixed = FALSE by default, and hence
        universal kriging is done by default. However this is only the case when
        method = 'TMB'. When method = 'EM', simple kriging is done, irrespective of
        what the argument simple_kriging_fixed is set to.
  
    |                                                                            
    |                                                                      |   0%

r-devel-linux-x86_64-fedora-gcc

Running ‘testthat.R’ [90m/48m]
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > ops <- options("crayon.enabled" = FALSE)
  > library(testthat)
  > require("covr")
  Loading required package: covr
  > 
  > test_check("FRK")
  Loading required package: FRK
  
  Attaching package: 'FRK'
  
  The following object is masked from 'package:stats':
  
      simulate
  
  NOTE: In FRK >2.0 simple_kriging_fixed = FALSE by default, and hence
        universal kriging is done by default. However this is only the case when
        method = 'TMB'. When method = 'EM', simple kriging is done, irrespective of
        what the argument simple_kriging_fixed is set to.
  
    |                                                                            
    |                                                                      |   0%
    |                                                                            
    |=======================                                             
...[truncated]...
                                                                    
    |=======================                                               |  33%
    |                                                                            
    |===============================================                       |  67%
    |                                                                            
    |======================================================================| 100%
  Maximum EM iterations reached
  Averaging over polygons...
  NOTE: In FRK >2.0 simple_kriging_fixed = FALSE by default, and hence
        universal kriging is done by default. However this is only the case when
        method = 'TMB'. When method = 'EM', simple kriging is done, irrespective of
        what the argument simple_kriging_fixed is set to.
  
    |                                                                            
    |                                                                      |   0%

NOTEdependencies in R coder-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-devel-windows-x86_64

r-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc

Base package in Suggests/Enhances imported in NAMESPACE:
  ‘parallel’

r-devel-windows-x86_64

Base package in Suggests/Enhances imported in NAMESPACE:
  'parallel'

CRAN check page ↗

Slowest check: 185.6 min · r-devel-linux-x86_64-fedora-gcc

Status changes

ERROR8 OK, 3 NOTE, 2 ERRORNow
ERROR9 OK, 3 NOTE, 2 ERROR2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.3.2

README· In the repository, left out of the releaseVignettesYes · 2 · dynamicNEWSNoCitation fileYes · cites a publicationWebsiteYes · pkgdown

Cites a JSS article

Help pages: 47
Examples that run: 79%26 run in a plain check · 3 never run · 4 hold no code
Exported functions with examples: 91%
Documented parameters: 94%
Return-value docs: 11%
Help pages citing references: 17%

Also includes 2 demo scripts (run with demo())

Vignettes (2)

How these are measured

Downloads

8.1K

CRAN downloads in the past year

Rank #4,387 · ~22/day · ~676/mo

Releases R versions

Daily download trend is not available in this view yet.

78930 days

1.9K90 days

8.1K1 year

Compare downloads with other packages →

Also on577 r2u4 autocran181 c2d4u

How downloads are counted

Repository

andrewzm/frk ↗Account: andrewzm

76Stars

19Forks

4Open issues

0Open PRs

11Releases

832Commits

5Commit identities

832 commits · Last activity 2026-01-15 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 50%
Median days to close, 50 most recently updated closed issues: 2
Median days to close, 50 most recently updated closed PRs: 4

Stars over time

2025-08-08 · 732026-09-21 · 76

How these are measured

PracticesBeta

8 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/andrewzm/frk on 2026-10-18.

Continuous integration (3)

GitHub ActionsR CMD check workflowTravis CI (config file)

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (3)

pkgdown

GitHub Pages site last deployed 2026-01-15 · The repository has a site deploy workflow

Coverage (1)

Coverage reporting

CRAN release process (1)

cran-comments.md

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

30 external dependencies (excludes base and recommended)

Installing FRK adds 116 packages (67 with compiled code, 117 MB of source tarballs). Heaviest: stringi 11 MB, sf 9.3 MB, ggplot2 6.0 MB.

Depends (1)

R >= 3.5.0

Imports (20)

digest dplyr fmesher ggplot2grDevicesHmiscMatrixmethodsplyr Rcpp sp spacetime sparseinv statmodstatsTMButilsggpubr reshape2 scales

LinkingTo (3)

Rcpp TMB RcppEigen

Suggests (13)

covr dggrids gridExtra gstat knitr lme4 mapprojparallelsf spdep splancs testthat verification

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Depends, Imports or LinkingTo, most downloaded first

IDE

How these are counted

Code & Tests

Datasets

People & History

People (2)

Andrew Zammit-Mangion

Author, Maintainer since 0.1.1 (2017)

Matthew Sainsbury-Dale

Author · added in 2.0.0

Listed in earlier versions (4)

Show 4 peopleHide 4 people

Patrick Amestoy

no longer listed · 0.1.2 to 0.1.8

Timothy Davis

no longer listed · 0.1.2 to 0.1.8

Iain Duff

no longer listed · 0.1.2 to 0.1.8

John K. Reid

no longer listed · 0.1.2 to 0.1.8

Releases (30)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.3.2Latest
record
2026-01-16 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
2.3.1
record
2024-07-16 · diff ↗
2.3.0
record
2024-06-17 · diff ↗
R
R 4.4.0 released · 2024-04-24
2.2.3
record
2024-04-03 · diff ↗
2.2.2
record
2024-02-26 · diff ↗
2.2.1
record
2024-01-09 · diff ↗
2.2.0
record
2023-10-18 · diff ↗ ·
added 1 export
coef_uncertainty
R
R 4.3.0 released · 2023-04-21
2.1.5
record
2023-02-01 · diff ↗
2.1.3
record
2022-12-20 · diff ↗
2.1.2
record
2022-12-16 · diff ↗
2.1.0
record
2022-09-15 · diff ↗ ·
added 7 exports
AIC, BIC, fitted, logLik, nobs, residuals, simulate
2.0.6
record
2022-09-01 · diff ↗

Show 26 earlier eventsHide 26 earlier events

R
R 4.2.0 released · 2022-04-22
2.0.5
record
2022-03-25 · diff ↗
2.0.4
record
2022-02-18 · diff ↗
2.0.3
record
2022-01-10 · diff ↗
2.0.2
record
2021-11-16 · diff ↗
2.0.1
record
2021-10-11 · diff ↗ ·
added 1 export
combine_basis
2.0.0
record
2021-05-28 · diff ↗ ·
added 4 exports
observed_BAUs, plot, plot_spatial_or_ST, unobserved_BAUs
R
R 4.1.0 released · 2021-05-18
1.0.0
record
2021-02-22 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.2.2.1
record
2020-04-01 · diff ↗
R
R 3.6.0 released · 2019-04-26
0.2.2
record
2018-07-13 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.2.1
record
2018-04-13 · diff ↗ ·
added 2 exports
Basis, predict
0.1.8
record
2018-01-13 · diff ↗
0.1.7
record
2018-01-07 · diff ↗ ·
added 3 exports
coef, info_fit, loglik
0.1.6
record
2017-10-13 · diff ↗
0.1.5
record
2017-08-08 · diff ↗ ·
removed 2 exports
Basis_as_data.frame, TensorP_Basis_as_data.frame
0.1.4
record
2017-06-14 · diff ↗ ·
added 1 export
remove_basis
0.1.3
record
2017-05-05 · diff ↗ ·
added 1 export
BAUs_from_points
0.1.2
record
2017-04-21 · diff ↗ ·
removed 2 exports
sp_to_ST_basis, timeline

added 2 exports
Basis_as_data.frame, TensorP_Basis_as_data.frame
R
R 3.4.0 released · 2017-04-21
0.1.1
record
2017-03-07
removedRemoved from CRAN
2017-02-05
correct copyright information was missing. Re-added 2017-03-07
R
R 3.3.0 released · 2016-05-03

Package metadata

First published: 2017-03-07
Total releases: 30 / 9 yrs
License: GPL (>= 2) OSI
Additional repositories: andrewzm.github.io
Minimum R: ≥ 3.5.0
Bundled data: 2.5 MB / 6 files
Download size: 4.4 MB

Appears in task views

Analysis of Spatial Data

Cite

Cite this package

Run in R for the authors' entry:

citation("FRK")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.18637/jss.v098.i04, 10.18637/jss.v108.i10.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for FRK version 2.3.2 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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