rlas (version 1.0.3)

readlasdata: Read data from a .las or .laz file

Description

Read data from .las or .laz files in format 1 to 4 according to LAS specifications and returns a data.table labeled according to LAS specifications. See the ASPRS documentation for the LAS file format. The optional logical parameters enable the user to save memory by choosing to load only the fields they need. Indeed, the readlasdata function does not 'stream' the data. Data is loaded into the computer's memory (RAM) suboptimally because R does not accommodate many different data types.

Usage

readlasdata(file, Intensity = TRUE, ReturnNumber = TRUE, NumberOfReturns = TRUE, ScanDirectionFlag = TRUE, EdgeOfFlightline = FALSE, Classification = TRUE, ScanAngle = TRUE, UserData = TRUE, PointSourceID = TRUE, RGB = TRUE)

Arguments

file

characters path to the .las or .laz file

Intensity

logical. do you want to load the Intensity field? default: TRUE

ReturnNumber

logical. do you want to load the ReturnNumber field? default: TRUE

NumberOfReturns

logical. do you want to load the NumberOfReturns field? default: TRUE

ScanDirectionFlag

logical. do you want to load the ScanDirectionFlag field? default: TRUE

EdgeOfFlightline

logical. do you want to load the EdgeOfFlightline field? default: TRUE

Classification

logical. do you want to load the Classification field? default: TRUE

ScanAngle

logical. do you want to load the ScanAngle field? default: TRUE

UserData

logical. do you want to load the UserData field? default: TRUE

PointSourceID

logical. do you want to load the PointSourceID field? default: FALSE

RGB

logical. do you want to load R,G and B fields? default: TRUE

Value

A data.table

See Also

Other rlas: readlasheader, writelas

Examples

lazfile <- system.file("extdata", "example.laz", package="rlas")
lasdata <- readlasdata(lazfile)