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This is a function required in overline(). It identifies whether sets of lines overlap (beyond shared points) or not.

Usage

islines(g1, g2)

Arguments

g1

A spatial object

g2

A spatial object

See also

Examples

if (FALSE) { # \dontrun{
# sf implementation
islines(routes_fast_sf[2, ], routes_fast_sf[3, ])
islines(routes_fast_sf[2, ], routes_fast_sf[22, ])
} # }