dtCosine: dt cosine

Description Usage Arguments Value Examples

Description

Calculates the Cosine distance between two points

Usage

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dtCosine(latFrom, lonFrom, latTo, lonTo)

Arguments

latFrom

latitude

lonFrom

longitude

latTo

latitude

lonTo

latitude

Value

distance in metres

Examples

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dt <- data.table(lat1 = seq(-38, -37, by = 0.1),
  lon1 = seq(144, 145, by = 0.1),
  lat2 = seq(-35, -34, by = 0.1),
  lon2 = seq(145, 146, by = 0.1))

dt[, distance := dtCosine(lat1, lon1, lat2, lon2)]

SymbolixAU/spatialdatatable documentation built on May 6, 2019, 11:20 a.m.