ShapeChange: Change-Point Estimation using Shape-Restricted Splines

In a scatterplot where the response variable is Gaussian, Poisson or binomial, we consider the case in which the mean function is smooth with a change-point, which is a mode, an inflection point or a jump point. The main routine estimates the mean curve and the change-point as well using shape-restricted B-splines. An optional subroutine delivering a bootstrapping confidence interval for the change-point is incorporated in the main routine.

Version: 1.1
Depends: coneproj (≥ 1.8), quadprog (≥ 1.5-5), R (≥ 3.0.2)
Suggests: stats, MASS, graphics, grDevices, utils
Published: 2015-11-15
Author: Xiyue Liao and Mary C Meyer
Maintainer: Xiyue Liao <xiyue at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
CRAN checks: ShapeChange results


Reference manual: ShapeChange.pdf
Package source: ShapeChange_1.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: ShapeChange_1.1.tgz, r-oldrel: not available
OS X Mavericks binaries: r-release: ShapeChange_1.1.tgz
Old sources: ShapeChange archive