crawl (version 2.3.0)

expandPred: Expand a time indexed data set with additional prediction times

Description

Expands a covariate data frame (or vector) that has a separate time index by inserting prediction times and duplicating the covariate values for all prediction time between subsequent data times.

Usage

expandPred(x, Time = "Time", predTime, time.col = FALSE)

Value

data.frame expanded by predTime

Arguments

x

Data to be expanded.

Time

Either a character naming the column which contains original time values, or a numeric vector of original times

predTime

prediction times to expand data

time.col

Logical value indicating whether to attach the new times to the expanded data

Author

Devin S. Johnson

Examples

#library(crawl)
origTime <- c(1:10)
x <- cbind(rnorm(10), c(21:30))
predTime <- seq(1,10, by=0.25)
expandPred(x, Time=origTime, predTime, time.col=TRUE)