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#############################################################################
# Copyright (c) 2009 Marie Laure Delignette-Muller, Christophe Dutang
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the
# Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
#
#############################################################################
### bootstrap in fitdistrplus
###
### R functions
###
pairs4boot <- function(x, trueval, col4ramp = c("green", "yellow", "orange", "red"),
nbgrid = 100, nbcol = 100, enhance=TRUE, ...)
{
x <- data.matrix(rbind(x, trueval))
n <- NROW(x)
if(is.null(trueval))
id1 <- 1:n
else
id1 <- 1:(n-1)
panel.points <- function(x, y, ...)
{
points(x[id1], y[id1], xlim=range(x, na.rm=TRUE), ylim=range(y, na.rm=TRUE))
if(!is.null(trueval))
abline(v=x[n], h=y[n], col="red", lwd=2)
}
panel.density <- function(x, y, ...)
{
id2 <- id1[!is.na(x[id1])]
#require(MASS)
k <- kde2d(x[id2], y[id2], n=nbgrid)
image(k, col=colorRampPalette(col4ramp)(nbcol), add=TRUE,
xlim=range(x, na.rm=TRUE), ylim=range(y, na.rm=TRUE))
if(!is.null(trueval))
abline(v=x[n], h=y[n], col="black", lty="dashed")
}
if(enhance)
pairs(x, upper.panel=panel.points,
lower.panel=panel.density, ...)
else
pairs(x, upper.panel=panel.points,
lower.panel=panel.points, ...)
invisible()
}
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