lidR (version 2.1.4)

tin: Spatial Interpolation Algorithm

Description

This function is made to be used in grid_terrain or lasnormalize. It implements an algorithm for spatial interpolation. Spatial interpolation is based on a Delaunay triangulation, which performs a linear interpolation within each triangle. There are usually a few points outside the convex hull, determined by the ground points at the very edge of the dataset, that cannot be interpolated with a triangulation. Extrapolation is done using the nearest neighbour approach.

Usage

tin()

See Also

Other spatial interpolation algorithms: knnidw, kriging

Examples

# NOT RUN {
LASfile <- system.file("extdata", "Topography.laz", package="lidR")
las = readLAS(LASfile)

# plot(las)

dtm = grid_terrain(las, algorithm = tin())

plot(dtm, col = terrain.colors(50))
plot_dtm3d(dtm)
# }