lidR use rlas to read LAS/LAZ files. rlas is a wrapper of LASlib and LASzip in R meaning that all the filter in LAStools are also in lidR

You can use filter = "-drop_class 2"

Check the documentation of readLAS to find all the filters with :

readLAS(filter = "-help")

lidR uses rlas to read LAS/LAZ files. rlas is a wrapper of LASlib and LASzip in R meaning that all the filters in LAStools are also in lidR

You can use filter = "-drop_class 2"

Check the documentation of readLAS to find all the filters with :

readLAS(filter = "-help")

You can use filter = "-drop_class 2" in readLAS. Check the documentation of readLAS to find all the filters. All the filter in lastool are in lidR

lidR use rlas to read LAS/LAZ files. rlas is a wrapper of LASlib and LASzip in R meaning that all the filter in LAStools are also in lidR

You can use filter = "-drop_class 2" 

Check the documentation of readLAS to find all the filters with :

readLAS(filter = "-help")