lidR (version 1.5.1)

grid_density: Map the pulse or point density

Description

Creates a map of the point density. If a "pulseID" field is found, return also a map of the pulse density.

Usage

grid_density(x, res = 4, filter = "")

Arguments

x

An object of class LAS or a catalog (see section "Use with a LAScatalog")

res

numeric. The size of a grid cell in LiDAR data coordinates units. Default is 4 = 16 square meters.

filter

character. Streaming filter while reading the files (see readLAS). If x is a LAScatalog the function readLAS is called internally. The user cannot manipulate the lidar data directly but can use streaming filters instead.

Value

Returns a data.table of class lasmetrics which enables easier plotting and RasterLayer casting.

Use with a <code>LAScatalog</code>

When the parameter x is a LAScatalog the function processes the entire dataset in a continuous way using a multicore process. The user can modify the processing options using the available options. lidR support .lax files. Computation speed will be significantly improved with a spatial index.

See Also

grid_metrics

Examples

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

d = grid_density(lidar, 5)
plot(d)
d = grid_density(lidar, 10)
plot(d)
# }