give the max value up to that point

max_through(x)

Arguments

x: A numeric vector of values

Details

useful for safety analyses where an event may be defined as a certain change in a biomarker, so need to see how the current measurement compares to the maximum value up to that point

Examples

max_through(c(4, 3, 3, 2, 5, 1))
#> [1] 4 4 4 4 5 5
max_through(c(NA, 2, 1, 4, 2))
#> [1] NA  2  2  4  4