writeTLS: Export _TreeLS_ point clouds to las/laz files
In TreeLS: Terrestrial Point Cloud Processing of Forest Data

Wrapper to writeLAS. This function automatically adds new data columns as extra bytes to the written las/laz file using add_lasattribute internally.

1	writeTLS(las, file, col_names = NULL, index = FALSE)

`las`	`LAS` object.
`file`	file path.
`col_names`	column names from las that you wish to export. If left empty, all columns not listed among `the standard LAS attributes` are added to the file.
`index`	`logical` - write lax file also.

file = system.file("extdata", "pine.laz", package="TreeLS")
tls = readTLS(file) %>% fastPointMetrics#'
tls_file = tempfile(fileext = '.laz')
writeTLS(tls, tls_file)

up_tls = readTLS(tls_file)
summary(up_tls)