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Convert origin-destination coordinates into desire lines

Usage

od_coords2line(odc, crs = 4326, remove_duplicates = TRUE)

Arguments

odc

A data frame or matrix representing the coordinates of origin-destination data. The first two columns represent the coordinates of the origin (typically longitude and latitude) points; the third and fourth columns represent the coordinates of the destination (in the same CRS). Each row represents travel from origin to destination.

crs

A number representing the coordinate reference system of the result, 4326 by default.

remove_duplicates

Should rows with duplicated rows be removed? TRUE by default.

Examples

odf <- od_coords(l = flowlines_sf)
odlines <- od_coords2line(odf)
odlines <- od_coords2line(odf, crs = 4326)
plot(odlines)

x_coords <- 1:3
n <- 50
d <- data.frame(lapply(1:4, function(x) sample(x_coords, n, replace = TRUE)))
names(d) <- c("fx", "fy", "tx", "ty")
l <- od_coords2line(d)
#> Duplicate OD pairs identified, removing 13 rows
plot(l)

nrow(l)
#> [1] 37
l_with_duplicates <- od_coords2line(d, remove_duplicates = FALSE)
plot(l_with_duplicates)

nrow(l_with_duplicates)
#> [1] 50