Error in reading point cloud data (.las) in R?

Question

I want to generate a DEM using a point cloud (.las) for which I tried reading it in R using rlas, lidR and rLiDAR : readLAS command and none of it seems to work.

The LASfile is not being read at all. The error is :

Error in readBin(con, "raw", size = 1, n = 4, endian = "little") : 
  can only read from a binary connection
In addition: Warning message:
In file(LASfile, open = "rb") :
  file("") only supports open = "w+" and open = "w+b": using the former

And the code is:

library(lidR)
library(rLiDAR)
library(rlas)
setwd("D:/Thing/Path")
LASfile <- system.file("extdata", "ABCD.las", package="rLiDAR")
rLAS <- readLAS(LASfile, short = TRUE)

Answer 1

You are trying to read the file "ABCD.las" from the package rLiDAR. The package rLiDAR does not have such file. You probably meant something like:

readLAS("D:/Thing/Path/ABCD.las")

Also you loaded both lidR and rLiDAR that both have a readLAS function that give two different outputs. You are likely to run into trouble using the two packages simultaneously. In addition rlas is the backend that drives read/write of las files in lidR. You will almost never need to load this package in your workspace.