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Function to split overlapping SpatialLines into segments

Source: R/overline.R
gsection.Rd

Divides SpatialLinesDataFrame objects into separate Lines. Each new Lines object is the aggregate of a single number of aggregated lines.

Usage

gsection(sl, buff_dist = 0)

Arguments

sl

SpatialLinesDataFrame with overlapping Lines to split by number of overlapping features.

buff_dist

A number specifying the distance in meters of the buffer to be used to crop lines before running the operation. If the distance is zero (the default) touching but non-overlapping lines may be aggregated.

See also

Other rnet: islines(), overline(), rnet_breakup_vertices(), rnet_group()

Examples

lib_versions <- sf::sf_extSoftVersion()
lib_versions
#>           GEOS           GDAL         proj.4 GDAL_with_GEOS     USE_PROJ_H 
#>       "3.12.1"        "3.8.4"        "9.4.0"         "true"         "true" 
#>           PROJ 
#>        "9.4.0" 
# fails on some systems (with early versions of PROJ)
if (lib_versions[3] >= "6.3.1") {
  sl <- routes_fast_sf[2:4, ]
  rsec <- gsection(sl)
  length(rsec) # sections
  plot(rsec, col = seq(length(rsec)))
  rsec <- gsection(sl, buff_dist = 50)
  length(rsec) # 4 features: issue
  plot(rsec, col = seq(length(rsec)))
}