LAS-class

0th

Percentile

An S4 class to represent the data read in a .las or .laz file

A LAS object is the representation of a las/laz files.

Details

A LAS object contains a data.table in the slot @data with the data read from a las/laz file, a LASheader in the slot @header (see the ASPRS documentation for the LAS file format for more information) and a CRS (coordinates reference system) in the slot @crs. In the slot @data The fields read from the las/laz file are named:

• X Y Z

• Intensity

• ReturnNumber

• NumberOfReturns

• ScanDirectionFlag

• EdgeOfFlightline

• Classification

• ScanAngle

• UserData

• PointSourceID

3 other fields can be computed is desired: slot @data:

• pulseID: a unique identifying number for each pulse so the beam origin of each point is known (see laspulse)

• flightlineID: a unique identifying number for the flightline so the flightline origin of each point is known (see lasflightline)

• color: the hexadecimal name of the color of the point if R, G and B fields exist (see lascolor)

Slots

data

data.table. a table representing the LAS data

header

list. A list of information contained in the las file header.

crs

A CRS object.