lasfiltersurfacepoints

0th

Percentile

Filter the surface points

This function is superseded by the algorithm highest usable in lasfilterdecimate

Usage
lasfiltersurfacepoints(las, res)
Arguments
las

An object of class LAS or LAScatalog.

res

numeric. The resolution of the grid used to filter the point cloud

Value

If the input is a LAS object, returns a LAS object. If the input is a LAScatalog, returns a LAScatalog.

Supported processing options

Supported processing options for a LAScatalog (in bold). For more details see the LAScatalog engine documentation:

  • chunk size: How much data is loaded at once.

  • chunk buffer: This function guarantee a strict wall-to-wall continuous output. The buffer option is not considered.

  • chunk alignment: Align the processed chunks.

  • cores: How many cores are used. More cores means more data is loaded at once.

  • progress: Displays a progression estimation.

  • output_files*: Mandatory because the output is likely to be too big to be returned in R and needs to be written in las/laz files. Supported templates are XLEFT, XRIGHT, YBOTTOM, YTOP, XCENTER, YCENTER ID and, if chunk is size equal to 0 (processing by file), ORIGINALFILENAME.

  • laz_compression: write las or laz files

  • select: The function will write files equivalent to the original ones. Thus select = "*" and cannot be changed.

  • filter: Read only points of interest.

See Also

Other lasfilters: lasfilterduplicates, lasfilters, lasfilter

Aliases
  • lasfiltersurfacepoints
Examples
# NOT RUN {
LASfile <- system.file("extdata", "Megaplot.laz", package="lidR")
las = readLAS(LASfile)
subset = lasfiltersurfacepoints(las, 2)
plot(subset)

# }
Documentation reproduced from package lidR, version 2.0.0, License: GPL-3

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