Interpolate Points along Line Geometry

Return points at specified distances along a line.

gInterpolate(spgeom, d, normalized = FALSE)

Arguments

spgeom

SpatialLines or SpatialLinesDataFrame object

d

Numeric vector specifying the distance along the line geometry

normalized

Logical determining if normalized distances should be used

Value

SpatialPoints object

Details

If normalized=TRUE, the distances will be interpreted as fractions of the line length.

See also

gInterpolate

Author

Rainer Stuetz

Examples

gInterpolate(readWKT("LINESTRING(25 50, 100 125, 150 190)"),
             d=seq(0, 1, by = 0.2), normalized = TRUE)
#> SpatialPoints:
#>           x         y
#> 1  25.00000  50.00000
#> 2  51.59741  76.59741
#> 3  78.19483 103.19483
#> 4 104.13216 130.37181
#> 5 127.06608 160.18591
#> 6 150.00000 190.00000
#> Coordinate Reference System (CRS) arguments: NA