Predefined point of interest filters
Select only some returns
filter_first(las) filter_firstlast(las) filter_firstofmany(las) filter_ground(las) filter_last(las) filter_nth(las, n) filter_single(las)
las |
An object of class |
n |
the position in the return sequence |
filter_first Select only the first returns.
filter_firstlast Select only the first and last returns.
filter_ground Select only the returns classified as ground according to LAS specification.
filter_last Select only the last returns i.e. the last returns and the single returns.
filter_nth Select the returns from their position in the return sequence.
filter_firstofmany Select only the first returns from pulses which returned multiple points.
filter_single Select only the returns that return only one point.
An object of class LAS
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
Other filters:
filter_duplicates(),
filter_poi(),
filter_surfacepoints()
LASfile <- system.file("extdata", "Megaplot.laz", package="lidR")
lidar = readLAS(LASfile)
firstReturns = filter_first(lidar)
groundReturns = filter_ground(lidar)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.