ShapeSelectForest
1.7Shape Selection for Landsat Time Series of Forest Dynamics
Overview
Landsat satellites collect important data about global forest conditions. Documentation about Landsat's role in forest disturbance estimation is available at the site https://landsat.gsfc.nasa.gov/. By constrained quadratic B-splines, this package delivers an optimal shape-restricted trajectory to a time series of Landsat imagery for the purpose of modeling annual forest disturbance dynamics to behave in an ecologically sensible manner assuming one of seven possible "shapes", namely, flat, decreasing, one-jump (decreasing, jump up, decreasing), inverted vee (increasing then decreasing), vee (decreasing then increasing), linear increasing, and double-jump (decreasing, jump up, decreasing, jump up, decreasing). The main routine selects the best shape according to the minimum Bayes information criterion (BIC) or the cone information criterion (CIC), which is defined as the log of the estimated predictive squared error. The package also provides parameters summarizing the temporal pattern including year(s) of inflection, magnitude of change, pre- and post-inflection rates of growth or recovery. In addition, it contains routines for converting a flat map of disturbance agents to time-series disturbance maps and a graphical routine displaying the fitted trajectory of Landsat imagery.
Install
Health
- OK2026-08-0513 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
- NOTE2026-08-0112 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
- OK2026-03-1014 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
Documentation
- Examples that run
- 33%
- Documented parameters
- 99%
- Return-value docs
- 100%
- References docs
- 33%
Downloads
Dependencies
Nothing depends on this yet.
Code & Tests
People & History
8 releases. Pick two to compare their code metrics. R releases are shown for context.
- RR 4.6.0 released · 2026-04-24
- RR 4.5.0 released · 2025-04-11
- RR 4.4.0 released · 2024-04-24
- 1.7Latest
- 1.62023-08-08 · diff ↗
- RR 4.3.0 released · 2023-04-21
- 1.52022-08-15 · diff ↗
- RR 4.2.0 released · 2022-04-22
- RR 4.1.0 released · 2021-05-18
- RR 4.0.0 released · 2020-04-24
- 1.42020-03-27 · diff ↗
- unarchivedReturned to CRAN2020-03-27
- archivedRemoved from CRAN2020-03-23check problems were not corrected in time
- RR 3.6.0 released · 2019-04-26
- RR 3.5.0 released · 2018-04-23
- RR 3.4.0 released · 2017-04-21
Package metadata
- First published
- 2015-06-01
- Total releases
- 8 / 11 yrs
- License
- GPL (>= 2) OSI
- Minimum R
- ≥ 3.0.2
- Bundled data
- 2.7 KB / 2 files
- Download size
- 87 KB
- Installed size
- not tracked yet
- With dependencies
- not tracked yet
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