Nothing
##############################################################################
##############################################################################
##############################################################################
plot.quickPredict <- function(x,
y,
xFct=function(x) x,
style=c("band",
"simple"),
ylim,
meanCol=2,
meanWD=2,
bandCol="grey50",
xlab,
ylab,
...
)
{
#######################################################################
### Method / function plot.quickPredict
### ----------------------------------------------------------
### Arguments:
### x: a "quickPredict" object.
### y: not used, only included for compatibility with generic method.
### xFct: a function applied to the x axis.
### style: a character, either "band" or "simple". Controls the way
### confidence intervals are displayed. If "band" is selected
### they are shown as a ribbon. Their boundaries appear as
### dashed lines otherwise.
### ylim: see plot (default provided if missing).
### meanCol: the color used to display the estimated mean of the term
### (see argument "col" in plot).
### meanWD: the width used to display the estimated mean of the term
### (see argument "lwd" in plot).
### bandCol: the color of the confidence interval ribbon when one is
### is drawn.
### xlab, ylab: see plot (default provided if any is missing).
### ...: see plot.
#######################################################################
xx <- x$xx
est.mean <- x$est.mean
ylimMissing <- missing(ylim)
if (ylimMissing) ylim <- range(est.mean)
se.fit <- !is.null(x$est.sd)
if (se.fit) {
est.upr <- est.mean + 1.96 * x$est.sd
est.lwr <- est.mean - 1.96 * x$est.sd
if (ylimMissing) ylim <- c(min(est.lwr),max(est.upr))
} ## End of conditional on se.fit
xx <- xFct(xx)
if (missing(xlab)) xlab <- x$include
if (missing(ylab)) ylab <- expression(eta)
plot(xx,
est.mean,
type="n",
ylim=ylim,
xlab=xlab,
ylab=ylab,
...)
if (se.fit) {
if (style[1] == "simple") {
lines(xx,est.mean,col=meanCol,lwd=meanWD)
lines(xx,est.upr,lty=2)
lines(xx,est.lwr,lty=2)
} ## End of conditional on style[1] == "simple"
if (style[1] != "simple") {
polygon(c(xx,rev(xx)),
c(est.upr,rev(est.lwr)),
border=NA,
col=bandCol)
lines(xx,est.mean,col=meanCol,lwd=meanWD)
} ## End of conditional on style[1] != "simple"
} else {
lines(xx,est.mean,col=meanCol,lwd=meanWD)
} ## End of conditional on se.fit
}
##############################################################################
##############################################################################
##############################################################################
lines.quickPredict <- function(x,
what=c("mean","upr","lwr"),
xFct=function(x) x,
...
)
{
#######################################################################
### Method / function lines.quickPredict
### ----------------------------------------------------------
### Arguments:
### x: a "quickPredict" object.
### what: one of the following character strings: "mean", "upr", "lwr".
### Controls the line drawn, the estimated mean, upper bound of
### the 95% CI or lower bound.
### xFct: a function applied to the x axis.
### ...: see lines.
#######################################################################
if (what[1] != "mean" && is.null(x$est.sd))
stop("Standard deviation of the estimate missing.\n Re-run quickPredict with \"se.fit\" set to TRUE.")
xx <- x$xx
xx <- xFct(xx)
switch(what[1],
mean = lines(xx,x$est.mean,...),
upr = lines(xx,x$est.mean + 1.96 * x$est.sd,...),
lwr = lines(xx,x$est.mean - 1.96 * x$est.sd,...)
)
}
##############################################################################
##############################################################################
##############################################################################
image.quickPredict <- function(x,
main,
xlab,
ylab,
...) {
#######################################################################
### Method / function image.quickPredict
### ----------------------------------------------------------
### Arguments:
### x: a "quickPredict" object.
### main, xlab, ylab: see image (default provided if any is missing).
### ...: additional arguments of image.
#######################################################################
## Check that the quickPredict object x corresponds
## to an interaction term and that its yy component
## is not null
if (is.null(x$yy)) stop("Component yy of x should be non NULL.")
if (missing(main)) main <- paste("term",x$include)
vNames <- strsplit(x$include,":")[[1]]
if (missing(xlab)) xlab <- vNames[1]
if (missing(ylab)) ylab <- vNames[2]
zz <- x$est.mean
xx <- x$xx
yy <- x$yy
image(xx,
yy,
zz,
xlab=xlab,
ylab=ylab,
main=main,...)
}
##############################################################################
##############################################################################
##############################################################################
contour.quickPredict <- function(x,
what=c("mean","sd"),
main,
xlab,
ylab,
add,
...) {
#######################################################################
### Method / function contour.quickPredict
### ----------------------------------------------------------
### Arguments:
### x: a "quickPredict" object.
### what: a character string specifying if the mean or the sd contours
### should be drawn.
### main, xlab, ylab, add: see contour (default provided if any is missing).
### ...: additional arguments of contour.
#######################################################################
## Check that the quickPredict object x corresponds
## to an interaction term and that its yy component
## is not null
if (is.null(x$yy)) stop("Component yy of x shoulc be non NULL.")
vNames <- strsplit(x$include,":")[[1]]
if (missing(add)) add <- FALSE
if (missing(xlab) && !add) xlab <- vNames[1]
if (missing(ylab) && !add) ylab <- vNames[2]
if (missing(main) && !add) main <- paste("term",x$include)
zz <- switch(what[1],
mean=x$est.mean,
sd=x$est.sd
)
xx <- x$xx
yy <- x$yy
if (!add) {
contour(xx,
yy,
zz,
xlab=xlab,
ylab=ylab,
main=main,
add=add,
...)
} else {
contour(xx,
yy,
zz,
add=add,
...)
}
}
##############################################################################
##############################################################################
##############################################################################
persp.quickPredict <- function(x,
what=c("mean","sd"),
main,
xlab,
ylab,
zlab,
...) {
#######################################################################
### Method / function persp.quickPredict
### ----------------------------------------------------------
### Arguments:
### x: a "quickPredict" object.
### what: a character string specifying if the mean or the sd perspective
### should be drawn.
### main, xlab, ylab, zlab: see persp (default provided if any is missing).
### ...: additional arguments of persp.
#######################################################################
## Check that the quickPredict object x corresponds
## to an interaction term and that its yy component
## is not null
if (is.null(x$yy)) stop("Component yy of x shoulc be non NULL.")
vNames <- strsplit(x$include,":")[[1]]
if (missing(xlab)) xlab <- vNames[1]
if (missing(ylab)) ylab <- vNames[2]
if (what[1] == "mean") {
if (missing(zlab)) zlab <- "mean"
if (missing(main)) main <- paste("Mean of term",x$include)
} else {
if (missing(zlab)) zlab <- "sd"
if (missing(main)) main <- paste("SD of term",x$include)
}
zz <- switch(what[1],
mean=x$est.mean,
sd=x$est.sd
)
xx <- x$xx
yy <- x$yy
persp(xx,
yy,
zz,
xlab=xlab,
ylab=ylab,
zlab=zlab,
main=main,
...)
}
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