ShapeSelectForest: Shape Selection for Landsat Time Series of Forest Dynamics
Version 1.3

Landsat satellites collect important data about global forest conditions. Documentation about Landsat's role in forest disturbance estimation is available at the site . 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.

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AuthorMary C. Meyer, Xiyue Liao, Elizabeth Freeman, Gretchen G. Moisen
Date of publication2016-10-28 19:12:55
MaintainerXiyue Liao <xiyue@rams.colostate.edu>
LicenseGPL (>= 2)
Version1.3
URL https://sites.google.com/site/shaperestrictedregression/shapeselectforest
Package repositoryView on CRAN
InstallationInstall the latest version of this package by entering the following in R:
install.packages("ShapeSelectForest")

Man pages

edf0s: A 21 by 7 Matrix Storing Edf0 Vectors
f2a.map.jpeg: f2a.map.jpeg
f2a.raster: Raster based flat-to-annual function.
f2p.raster: Raster based flat-to-parameter function.
flat2annual: flat2annual
flat2parameter: flat2parameter
getedf0: Get the Edf0 Vector for the Shape Routine
plotshape: The Plot Routine for an Object of the Shape Routine
shape: Shape Selection
shapeparams: Shape Parameters
ShapeSelectForest-package: Shape Selection for Landsat Time Series of Forest Dynamics
ymat: Response Variable Matrix

Functions

ShapeSelectForest Man page
ShapeSelectForest-package Man page
bqspl Source code
edf0s Man page
f2a.map.jpeg Man page Source code
f2a.mean Source code
f2a.median Source code
f2a.raster Man page Source code
f2a.wrapper Source code
f2p.raster Man page Source code
f2p.wrapper Source code
flat2annual Man page Source code
flat2parameter Man page Source code
getedf0 Man page Source code
grd2gri Source code
plotshape Man page Source code
shape Man page Source code
shapeparams Man page Source code
sl Source code
ymat Man page

Files

inst
inst/CITATION
inst/extdata
inst/extdata/helpexamples
inst/extdata/helpexamples/MINI_FLATPRED.img
inst/extdata/helpexamples/MINI_NDVI.img
inst/extdata/helpexamples/MINI_FI.img
inst/extdata/helpexamples/MINI_B5.img
inst/extdata/helpexamples/MINI_NBR.img
NAMESPACE
data
data/ymat.rda
data/edf0s.rda
R
R/shape.R
MD5
DESCRIPTION
ChangeLog
man
man/f2a.map.jpeg.Rd
man/shapeparams.Rd
man/flat2annual.Rd
man/f2a.raster.Rd
man/flat2parameter.Rd
man/getedf0.Rd
man/edf0s.Rd
man/shape.Rd
man/ymat.Rd
man/plotshape.Rd
man/f2p.raster.Rd
man/ShapeSelectForest-package.Rd
ShapeSelectForest documentation built on May 19, 2017, 4:23 p.m.