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### as.data.table.predictCox.R ---
##----------------------------------------------------------------------
## Author: Thomas Alexander Gerds
## Created: Mar 3 2017 (09:28)
## Version:
## Last-Updated: Sep 6 2023 (09:51)
## By: Thomas Alexander Gerds
## Update #: 173
##----------------------------------------------------------------------
##
### Commentary:
##
### Change Log:
##----------------------------------------------------------------------
##
### Code:
## * as.data.table.predictCox (documentation)
#' @title Turn predictCox Object Into a \code{data.table}
#' @description Turn predictCox object into a \code{data.table}.
#' @name as.data.table.predictCox
#'
#' @param x object obtained with function \code{predictCox}
#' @param keep.rownames Not used.
#' @param se [logical] Should standard errors/quantile for confidence bands be displayed?
#' @param ... Not used.
## * as.data.table.predictCox (code)
#' @rdname as.data.table.predictCox
#' @export
as.data.table.predictCox <- function(x, keep.rownames = FALSE, se = TRUE,...){
times=NULL
n.obs <- NROW(x[[x$type[1]]])
if (!is.null(x$status)){
nd <- x$status[,.SD,.SDcols = c("nevent","strata")]
}else if(x$baseline){
nd <- data.table::data.table(observation = 1:n.obs, strata = x$strata)
}else{
nd <- data.table::data.table(observation = 1:n.obs, x$newdata, strata = x$strata)
}
if(is.null(x$times)){
stop("Cannot convert to a data.table object when times is missing in object \n",
"set the argument \'keep.time\' to TRUE when calling the predict method \n")
}
if(!is.matrix(x[[x$type[1]]])){ ## baseline hazard
out <- as.data.table(x[c("times",x$type)])
if (!is.null(nd)){
out <- cbind(nd,out)
}
}else{
if(x$diag || identical(as.character(x$type),"lp")){
n.times <- 1
}else{
n.times <- length(x$times)
}
out <- data.table::rbindlist(lapply(1:n.times,function(tt){
ndtt=data.table::copy(nd)
if(x$diag && length(x$times)>0){
nd[,times:=x$times]
}else if(length(x$times)>0){
nd[,times:=x$times[[tt]]]
}
for (name in x$type){
tyc <- cbind(x[[name]][,tt])
colnames(tyc) <- name
vec.names <- c("")
if (x$se==1L){
if(se){
tyc <- cbind(tyc,
x[[paste0(name,".se")]][,tt]
)
vec.names <- c(vec.names,".se")
}
if(!is.null(x[[paste0(name,".transform")]])){
tyc <- cbind(tyc,
x[[paste0(name,".lower")]][,tt],
x[[paste0(name,".upper")]][,tt])
vec.names <- c(vec.names,".lower",".upper")
}
}
if (x$band==1L){
if(se[[1]] && !is.null(x[[paste0(name,".transform")]])){
tyc <- cbind(tyc,
x[[paste0(name,".quantileBand")]]
)
vec.names <- c(vec.names,".quantileBand")
}
if(!is.null(x[[paste0(name,".transform")]])){
tyc <- cbind(tyc,
x[[paste0(name,".lowerBand")]][,tt],
x[[paste0(name,".upperBand")]][,tt])
vec.names <- c(vec.names,".lowerBand",".upperBand")
}
}
colnames(tyc) <- paste0(name,vec.names)
nd <- cbind(nd,tyc)
}
nd
}))
}
return(out)
}
######################################################################
### as.data.table.predictCox.R ends here
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