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#' Plot Method for a joint model for longitudinal data and a terminal event.
#'
#' Plots estimated baseline survival and hazard functions for a terminal
#' outcome from an object of class 'longiPenal'. If available, plot the estimated
#' quantities related to a mediation analysis. Confidence bands are allowed.
#'
#'
#' @aliases plot.longiPenal lines.longiPenal
#' @usage
#'
#' \method{plot}{longiPenal}(x, type.plot = "Hazard",plot.mediation="All",
#' conf.bands=TRUE,pos.legend= "topright", cex.legend=0.7, main, color,
#' median=TRUE, Xlab = "Time", Ylab = "Hazard function", ...)
#' @param x A joint model for longitudinal outcome and a terminal event, i.e. a
#' \code{longiPenal} class object (output from calling \code{longiPenal}
#' function).
#' @param type.plot a character string specifying the type of curve for the
#' terminal event. Possible value are "Hazard", or "Survival". The default is
#' "Hazard". Only the first words are required, e.g "Haz", "Su"
#' @param plot.mediation A character string specifying the desired plot.
#' Possible values are "All", "PTE" or "Effects". The default is
#' "All" which displays both plots.
#' @param conf.bands Logical value. Determines whether confidence bands will be
#' plotted. The default is to do so.
#' @param pos.legend The location of the legend can be specified by setting
#' this argument to a single keyword from the list '"bottomright"', '"bottom"',
#' '"bottomleft"', '"left"', '"topleft"', '"top"', '"topright"', '"right"' and
#' '"center"'. The default is '"topright"'
#' @param cex.legend character expansion factor *relative* to current
#' 'par("cex")'. Default is 0.7
#' @param main title of plot
#' @param color color of the curve (integer)
#' @param median Logical value. Determines whether survival median will be plotted. Default is TRUE.
#' @param Xlab Label of x-axis. Default is '"Time"'
#' @param Ylab Label of y-axis. Default is '"Hazard function"'
#' @param ... other unused arguments
#' @return Print a plot for the terminal event of the joint model for a
#' longitudinal and survival data.
#' @seealso \code{\link{longiPenal}}
#' @keywords file
##' @export
#' @examples
#'
#'
#' \dontrun{
#' ###--- Joint model for longitudinal data and a terminal event ---###
#'
#' data(colorectal)
#' data(colorectalLongi)
#'
#' # Survival data preparation - only terminal events
#' colorectalSurv <- subset(colorectal, new.lesions == 0)
#'
#' # Baseline hazard function approximated with splines
#' # Random effects as the link function
#'
#' model.spli.RE <- longiPenal(Surv(time1, state) ~ age + treatment + who.PS
#' + prev.resection, tumor.size ~ year * treatment + age + who.PS ,
#' colorectalSurv, data.Longi = colorectalLongi, random = c("1", "year"),
#' id = "id", link = "Random-effects", left.censoring = -3.33,
#' n.knots = 7, kappa = 2)
#' pdf(file = "/home/agareb1/etudiants/al10/newpack/test/plot_longi.pdf")
#'
#' # Plot the estimated baseline hazard function with the confidence intervals
#' plot(model.spli.RE)
#'
#' # Plot the estimated baseline hazard function with the confidence intervals
#' plot(model.spli.RE, type = "Survival")
#' }
#'
#'
"plot.longiPenal" <- function (x, type.plot="Hazard", plot.mediation='All',
conf.bands=TRUE, pos.legend="topright", cex.legend=0.7,
main, color=2, median=TRUE, Xlab = "Time",
Ylab = "Hazard function",...)
{
plot.type <- charmatch(type.plot, c("Hazard", "Survival"),nomatch = 0)
if (plot.type == 0) {
stop("estimator must be Hazard or Survival")
}
if(missing(main))
main<-""
if(plot.type==1){ # hazard
if(conf.bands){
matplot(x$xD[-1,1], x$lamD[-1,,1], col=color, type="l", lty=c(1,2,2), xlab=Xlab,ylab=Ylab, main=main, ...)
}else{
plot(x$xD[-1,1], x$lamD[-1,1,1], col=color, type="l", lty=1, xlab=Xlab,ylab=Ylab, main=main, ...)
}
}else{ # survival
if (missing(Ylab)) Ylab <- "Baseline survival function"
if (x$typeof == 0){
if (conf.bands){
matplot(x$xD[,1], x$survD[,,1], col=color, type="l", lty=c(1,2,2), xlab=Xlab,ylab=Ylab, main=main, ...)
if (median){abline(a=0.5,b=0,cex=.5,col=1,lty=3)}
}else{
plot(x$xD[,1], x$survD[,1,1], col=color, type="l", lty=1, xlab=Xlab,ylab=Ylab, main=main, ...)
if (median){abline(a=0.5,b=0,cex=.5,col=1,lty=3)}
}
}else{
if (conf.bands){
matplot(x$xSuD[,1], x$survD[,,1], col=color, type="l", lty=c(1,2,2), xlab=Xlab,ylab=Ylab, main=main, ...)
if (median){abline(a=0.5,b=0,cex=.5,col=1,lty=3)}
}else{
plot(x$xSuD[,1], x$survD[,1,1], col=color, type="l", lty=1, xlab=Xlab,ylab=Ylab, main=main, ...)
if (median){abline(a=0.5,b=0,cex=.5,col=1,lty=3)}
}
}
}
legend(pos.legend, c("event"), lty=1, col=color, cex=cex.legend, ...)
if(!is.null(x$mediation)){
if(plot.mediation=="Rt"){
x<-x$mediation
if(length(x)==9 & conf.bands){
data.rt<-x$data.rt
rt.ci=x$Rt.ci
nie.ci=x$NIE.ci
nde.ci = x$NDE.ci
te.ci =x$TE.ci
data.g=x$data.g
#plot r(t)
ymin<-ifelse(min(rt.ci$lower,na.rm=T)<0,
1.2*min(rt.ci$lower,na.rm=T),
0.8*min(rt.ci$yuppower,na.rm=T))
ymax<-ifelse(max(rt.ci$upper,na.rm = T)<0,
0.8*max(rt.ci$upper,na.rm=T),
1.2*max(rt.ci$upper,na.rm=T))
invisible(readline(prompt="Press [Enter] to continue:"))
plot(x<-data.rt$Time,y<-data.rt$Rt,type='l',col="black",
xlab="Time",ylab='PTE',main="Estimated PTE with its 95% confidence band",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-rt.ci$upper,type='l',lty=2,col="black",...)
lines(x<-data.rt$Time,y<-rt.ci$lower,type='l',lty=2,col="black",...)
}else{
#plot without confidence bands
data.rt<-x$data.rt
data.g<-x$data.g
#plot r(t)
invisible(readline(prompt="Press [Enter] to continue:"))
plot(x<-data.rt$Time,y<-data.rt$Rt,type='l',col="black",
xlab="Time",ylab='PTE',main="Estimated PTE",...)
}
}
if(plot.mediation=="Effects"){
x<-x$mediation
if(length(x)==9 & conf.bands){
data.rt<-x$data.rt
rt.ci=x$Rt.ci
nie.ci=x$NIE.ci
nde.ci = x$NDE.ci
te.ci =x$TE.ci
data.g=x$data.g
#plot effects
invisible(readline(prompt="Press [Enter] to continue:"))
miny <- min(te.ci$lower,nie.ci$lower,nde.ci$lower,na.rm=T)
maxy <-max(te.ci$upper,nie.ci$upper,nde.ci$upper,na.rm=T)
ymin<-ifelse(miny<0,1.2*miny,0.8*miny)
ymax<-ifelse(maxy<0,0.8*maxy,1.2*maxy)
plot(x<-data.rt$Time,y<-data.rt$TE,type='l',col="black",
xlab="Time",ylab='Effects',main="Estimated natural effects with their 95% confidence bands",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-data.rt$NDE,type='l',col="green",...)
lines(x<-data.rt$Time,y<-data.rt$NIE,type='l',col="red",...)
lines(x<-data.rt$Time,y<-te.ci$lower,type='l',lty=2,col="black",...)
lines(x<-data.rt$Time,y<-nde.ci$lower,type='l',lty=2,col="green",...)
lines(x<-data.rt$Time,y<-nie.ci$lower,type='l',lty=2,col="red",...)
lines(x<-data.rt$Time,y<-te.ci$upper,type='l',lty=2,col="black",...)
lines(x<-data.rt$Time,y<-nde.ci$upper,type='l',lty=2,col="green",...)
lines(x<-data.rt$Time,y<-nie.ci$upper,type='l',lty=2,col="red",...)
legend(pos.legend,legend=c("Total effect","Direct effect","Indirect effect"),
col=c("black","green","red"),lty=1)
}else{
#plot without confidence bands
data.rt<-x$data.rt
data.g<-x$data.g
#plot effect
invisible(readline(prompt="Press [Enter] to continue:"))
ymin<-ifelse(min(data.rt$TE,data.rt$NIE,data.rt$TE)<0,
1.2*min(data.rt$TE,data.rt$NIE,data.rt$TE),
0.8*min(data.rt$TE,data.rt$NIE,data.rt$TE))
ymax<-ifelse(max(data.rt$TE,data.rt$NIE,data.rt$TE)<0,
0.8*max(data.rt$TE,data.rt$NIE,data.rt$TE),
1.2*max(data.rt$TE,data.rt$NIE,data.rt$TE))
plot(x<-data.rt$Time,y<-data.rt$TE,type='l',col="black",
xlab="Time",ylab='Effects',main="Estimated natural effects",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-data.rt$NIE,type='l',col="green",...)
lines(x<-data.rt$Time,y<-data.rt$NDE,type='l',col="red",...)
legend(pos.legend,legend=c("Total effect","Direct effect","Indirect effect"),
col=c("black","green","red"),lty=1)
}
}
if(plot.mediation=="All"){
x<-x$mediation
if(conf.bands & !is.null(x$Rt.ci)){
data.rt<-x$data.rt
rt.ci=x$Rt.ci
nie.ci=x$NIE.ci
nde.ci = x$NDE.ci
te.ci =x$TE.ci
#plot r(t)
ymin<-ifelse(min(rt.ci$lower,na.rm=T)<0,
1.2*min(rt.ci$lower,na.rm=T),
0.8*min(rt.ci$lower,na.rm=T))
ymax<-ifelse(max(rt.ci$upper,na.rm = T)<0,
0.8*max(rt.ci$upper,na.rm=T),
1.2*max(rt.ci$upper,na.rm=T))
invisible(readline(prompt="Press [Enter] to continue:"))
plot(x<-data.rt$Time,y<-data.rt$Rt,type='l',col="black",
xlab="Time",ylab='R(t)',main="Estimated PTE with its 95% confidence band",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-rt.ci$upper,type='l',lty=2,col="black",...)
lines(x<-data.rt$Time,y<-rt.ci$lower,type='l',lty=2,col="black",...)
#plot effects
invisible(readline(prompt="Press [Enter] to continue:"))
miny <- min(te.ci$lower,nie.ci$lower,nde.ci$lower,na.rm=T)
maxy <-max(te.ci$upper,nie.ci$upper,nde.ci$upper,na.rm=T)
ymin<-ifelse(miny<0,1.2*miny,0.8*miny)
ymax<-ifelse(maxy<0,0.8*maxy,1.2*maxy)
plot(x<-data.rt$Time,y<-data.rt$TE,type='l',col="black",
xlab="Time",ylab='Effects',main="Estimated natural effects with their 95% confidence bands",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-data.rt$NDE,type='l',col="green",...)
lines(x<-data.rt$Time,y<-data.rt$NIE,type='l',col="red",...)
lines(x<-data.rt$Time,y<-te.ci$lower,type='l',lty=2,col="black",...)
lines(x<-data.rt$Time,y<-nde.ci$lower,type='l',lty=2,col="green",...)
lines(x<-data.rt$Time,y<-nie.ci$lower,type='l',lty=2,col="red",...)
lines(x<-data.rt$Time,y<-te.ci$upper,type='l',lty=2,col="black",...)
lines(x<-data.rt$Time,y<-nde.ci$upper,type='l',lty=2,col="green",...)
lines(x<-data.rt$Time,y<-nie.ci$upper,type='l',lty=2,col="red",...)
legend(pos.legend,legend=c("Total effect","Direct effect","Indirect effect"),
col=c("black","green","red"),lty=1)
}else if(conf.bands & is.null(x$Rt.ci)){
data.rt<-x$data.rt
plot(x<-data.rt$Time,y<-data.rt$Rt,type='l',col="black",
xlab="Time",ylab='R(t)',main="Estimated PTE",...)
#plot effect
invisible(readline(prompt="Press [Enter] to continue:"))
ymin<-ifelse(min(data.rt$TE,data.rt$NIE,data.rt$NDE)<0,
1.2*min(data.rt$TE,data.rt$NIE,data.rt$NDE),
0.8*min(data.rt$TE,data.rt$NIE,data.rt$NDE))
ymax<-ifelse(max(data.rt$TE,data.rt$NIE,data.rt$NDE)<0,
0.8*max(data.rt$TE,data.rt$NIE,data.rt$NDE),
1.2*max(data.rt$TE,data.rt$NIE,data.rt$NDE))
plot(x<-data.rt$Time,y<-data.rt$TE,type='l',col="black",
xlab="Time",ylab='Effects',main="Estimated natural effects",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-data.rt$NIE,type='l',col="green",...)
lines(x<-data.rt$Time,y<-data.rt$NDE,type='l',col="red",...)
legend(pos.legend,legend=c("Total effect","Direct effect","Indirect effect"),
col=c("black","green","red"),lty=1)
}else{
#plot without confidence bands
data.rt<-x$data.rt
#plot r(t)
invisible(readline(prompt="Press [Enter] to continue:"))
plot(x<-data.rt$Time,y<-data.rt$Rt,type='l',col="black",
xlab="Time",ylab='R(t)',main="Estimated PTE",...)
#plot effect
invisible(readline(prompt="Press [Enter] to continue:"))
ymin<-ifelse(min(data.rt$TE,data.rt$NIE,data.rt$NDE)<0,
1.2*min(data.rt$TE,data.rt$NIE,data.rt$NDE),
0.8*min(data.rt$TE,data.rt$NIE,data.rt$NDE))
ymax<-ifelse(max(data.rt$TE,data.rt$NIE,data.rt$NDE)<0,
0.8*max(data.rt$TE,data.rt$NIE,data.rt$NDE),
1.2*max(data.rt$TE,data.rt$NIE,data.rt$NDE))
plot(x<-data.rt$Time,y<-data.rt$TE,type='l',col="black",
xlab="Time",ylab='Effects',main="Estimated natural effects",
ylim=c(ymin,ymax),...)
lines(x<-data.rt$Time,y<-data.rt$NIE,type='l',col="green",...)
lines(x<-data.rt$Time,y<-data.rt$NDE,type='l',col="red",...)
legend(pos.legend,legend=c("Total effect","Direct effect","Indirect effect"),
col=c("black","green","red"),lty=1)
}
}
}
return(invisible())
}
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