ddateDistance function

Deposition Date Distance

Calculate the distance (i.e. dissimilarity) between two deposition dates

ddateDistance(
  ddate1,
  ddate2,
  normalizeBy = 5,
  clipWindow = FALSE,
  na.dist = 0.5
)

Arguments

• ddate1: 1D array of POSIX dates
• ddate2: same format and length as ddate1
• normalizeBy: Numeric scalar to be used for normalization, i.e. the number of days, that defines the distance value of 1
• clipWindow: Should differences larger than 'normalizeBy' number of days be set to distance 'Infinity'? default FALSE.
• na.dist: replace NA values with that distance

Returns

An array of length(ddate1) containing the distances according to the configurations.

Examples

## create ddate arrays..
ddate <- as.POSIXct("2019/04/20 12:00", tz = "UTC")
ddate1 <- rep(ddate, 5)
ddate2 <- as.POSIXct(c("2019/04/12 08:00", "2019/04/16 10:00", "2019/04/20 12:00",
                       "2019/04/21 16:00", "2019/04/22 20:00"), tz = "UTC")

## .. and calculate distance:
ddateDistance(ddate1, ddate2, normalizeBy = 5)

Author(s)

fherla