ddateDistance: Deposition Date Distance

In sarp.snowprofile.alignment: Snow Profile Alignment, Aggregation, and Clustering

Deposition Date Distance

Description

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

Usage

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

Value

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

Author(s)

fherla

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)

sarp.snowprofile.alignment documentation built on Aug. 8, 2022, 1:05 a.m.