give the max value up to that point
max_through(x)
x | A numeric vector of values |
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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
max_through(c(4, 3, 3, 2, 5, 1))#> [1] 4 4 4 4 5 5max_through(c(NA, 2, 1, 4, 2))#> [1] NA 2 2 4 4