get substring from linestring
get substring from linestring
st_linesubstring(x, from, to, tolerance, ...)
x |
object of class |
from |
relative distance from origin (in [0,1]) |
to |
relative distance from origin (in [0,1]) |
tolerance |
tolerance parameter, when to snap to line node node |
... |
ignored |
object of class sfc
library(sf) lines = st_sfc(st_linestring(rbind(c(0,0), c(1,2), c(2,0))), crs = 4326) spl = st_linesubstring(lines, 0.2, 0.8) # should warn plot(st_geometry(lines), col = 'red', lwd = 3) plot(spl, col = 'black', lwd = 3, add = TRUE) st_linesubstring(lines, 0.49999, 0.8) # three points st_linesubstring(lines, 0.49999, 0.8, 0.001) # two points: snap start to second node
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