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maxlike

Model Species Distributions by Estimating the Probability of Occurrence Using Presence-Only Data

v0.1-12 · Aug 18, 2025 · GPL (>= 3)

Description

Provides a likelihood-based approach to modeling species distributions using presence-only data. In contrast to the popular software program MAXENT, this approach yields estimates of the probability of occurrence, which is a natural descriptor of a species' distribution.

Downloads

CRAN

2.5K

Last 30 days

2446th

10.6K

Last 90 days

48K

Last year

Trend: -45.3% (30d vs prior 30d)

r2u CRAN

2

Last 30 days

26

Last 90 days

166

Last year

Trend: -80% (30d vs prior 30d)

autoCRAN

7

Last 7 days

15

Last 30 days

0

All-time

autoCRAN-only: this name is served only by autoCRAN, so the count is exact.

CRAN Check Status

13 OK
Show all 13 flavors
Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Jun 9, 2026
WARNING 12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE Jun 8, 2026
WARNING r-devel-linux-x86_64-debian-gcc

for unstated dependencies in examples

Warning in file(out, "wt") :
  cannot open file '/tmp/Rtmp8M6GAy/file36561e467ee68e/carw.R': No space left on device
Error in file(out, "wt") : cannot open the connection
Execution halted
OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Code intelligence has not been computed for this package yet.

Code

Structure

Lines of code

677

Files

16

Compiled share

0%

Has compiled src

No

Language breakdown

R 275 (40.6%)Docs 402 (59.4%)

API

Exported functions

1

Internal functions

7

Testing & CI

Has tests

No

Test-to-code ratio

0.00

testthat edition

CI present

No

CI type

[]

PR gated

No

Docs

Return-value doc rate

100%

\dontrun example ratio

33.3%

Roxygen coverage

100%

Has pkgdown

No

NEWS present

Yes

Health & Security signals

Informational signals; not verdicts.

on.exit coverage

Unsafe pattern score

0

Dep constraint coverage

0%

Secret pattern count

0

Bundled 3rd-party code

2 items

Portability & License

Min R version

2.10.0

System requirements

C++ standard

License

GPL (>= 3)

License flags

SPDX valid, OSI approved

History

Versions

12

First release

2011-12-15

Latest release

2025-08-18

Avg cadence

318 days

Cold removal rate

Dep drift

0

LOC over versions

v0.1-0: 397 LOCv0.1-1: 572 LOCv0.1-2: 655 LOCv0.1-3: 655 LOCv0.1-4: 655 LOCv0.1-5: 655 LOCv0.1-7: 673 LOCv0.1-8: 686 LOCv0.1-9: 684 LOCv0.1-10: 675 LOCv0.1-11: 679 LOCv0.1-12: 677 LOC

Per-file churn detail lives in the source pipeline: https://github.com/r-observatory/cran-code-metrics.

Reverse Dependencies (2)

Dependency Network

Dependencies Reverse dependencies raster AICcmodavg BiodiversityR maxlike

Version History

13 tracked
new 0.1-12 Mar 10, 2026
updated 0.1-12 ← 0.1-11 diff Aug 17, 2025
updated 0.1-11 ← 0.1-10 diff Mar 18, 2024
updated 0.1-10 ← 0.1-9 diff Sep 17, 2023
updated 0.1-9 ← 0.1-8 diff Sep 7, 2022
updated 0.1-8 ← 0.1-7 diff Nov 29, 2019
updated 0.1-7 ← 0.1-5 diff Jan 21, 2017
updated 0.1-5 ← 0.1-4 diff Dec 17, 2013
updated 0.1-4 ← 0.1-3 diff Jul 4, 2013
updated 0.1-3 ← 0.1-2 diff Jan 9, 2013
updated 0.1-2 ← 0.1-1 diff Dec 20, 2012
updated 0.1-1 ← 0.1-0 diff Feb 17, 2012
new 0.1-0 Dec 20, 2011