Convert a SpatialLinesDataFrame to points The number of points will be double the number of lines with line2points. A closely related function, line2pointsn returns all the points that were line vertices. The points corresponding with a given line, i, will be (2*i):((2*i)+1).

Source: R/od-funs.R

Convert a SpatialLinesDataFrame to points The number of points will be double the number of lines with line2points. A closely related function, line2pointsn returns all the points that were line vertices. The points corresponding with a given line, i, will be (2*i):((2*i)+1).

line_to_points(l, ids = rep(1:nrow(l), each = 2))

line2pointsn(l)

Arguments

l

A SpatialLinesDataFrame
ids

Vector of ids (by default 1:nrow(l))

Examples

l <- routes_fast[2:4, ]
lpoints <- line_to_points(l)
lpoints2 <- line2pointsn(l)
plot(lpoints, pch = lpoints$id, cex = lpoints$id)
points(lpoints2, add = TRUE)
#> Warning: "add" is not a graphical parameter
line_to_points(routes_fast_sf[2:4, ])
#> Simple feature collection with 6 features and 1 field
#> geometry type:  POINT
#> dimension:      XY
#> bbox:           xmin: -1.550964 ymin: 53.8175 xmax: -1.516748 ymax: 53.82868
#> epsg (SRID):    NA
#> proj4string:    NA
#>   id                          p
#> 1  1 POINT (-1.516748 53.82868)
#> 2  1 POINT (-1.535849 53.82832)
#> 3  2 POINT (-1.516748 53.82868)
#> 4  2 POINT (-1.550964 53.82408)
#> 5  3 POINT (-1.516748 53.82868)
#> 6  3  POINT (-1.530693 53.8175)