Last data update: 2014.03.03
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ShapeSelectForest
Package: ShapeSelectForest
Type: Package
Title: Shape Selection for Landsat Time Series of Forest Dynamics
Version: 1.2
Date: 2015-12-25
Author: Mary C. Meyer, Xiyue Liao, Elizabeth Freeman, Gretchen G. Moisen
Maintainer: Xiyue Liao <xiyue@rams.colostate.edu>
Description: Landsat satellites collect important data about global forest conditions. Documentation about Landsat's role in forest disturbance estimation is available at the site <http://landsat.gsfc.nasa.gov/?p=9513>. 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.
License: GPL (>= 2)
Depends: coneproj (>= 1.6), raster (>= 2.3-40), rgdal (>= 0.8-12), R
(>= 3.0.2)
NeedsCompilation: no
Suggests: stats, MASS, graphics, grDevices, utils
Packaged: 2015-12-25 17:26:08 UTC; xiyue
Repository: CRAN
Date/Publication: 2015-12-26 00:41:05
Install log
* installing to library '/home/ddbj/local/lib64/R/library'
* installing *source* package 'ShapeSelectForest' ...
** package 'ShapeSelectForest' successfully unpacked and MD5 sums checked
** R
** data
** inst
** preparing package for lazy loading
** help
*** installing help indices
converting help for package 'ShapeSelectForest'
finding HTML links ... done
ShapeSelectForest-package html
edf0s html
f2a.map.jpeg html
f2a.raster html
f2p.raster html
flat2annual html
flat2parameter html
getedf0 html
plotshape html
shape html
shapeparams html
ymat html
** building package indices
** testing if installed package can be loaded
* DONE (ShapeSelectForest)
Making 'packages.html' ... done
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