Progression Handler: Progress Reported as the Size of a File on the File System
handler_filesize(
file = "default.progress",
intrusiveness = getOption("progressr.intrusiveness.file", 5),
target = "file",
...
)(character) A filename.
(numeric) A non-negative scalar on how intrusive (disruptive) the reporter to the user.
(character vector) Specifies where progression updates are rendered.
Additional arguments passed to make_progression_handler().
This progression handler reports progress by updating the size of a file
on the file system. This provides a convenient way for an R script running
in batch mode to report on the progress such that the user can peek at the
file size (by default in 0-100 bytes) to assess the amount of the progress
made, e.g. ls -l -- *.progress.
If the *.progress file is accessible via for instance SSH, SFTP,
FTPS, HTTPS, etc., then progress can be assessed from a remote location.
# NOT RUN {
handlers(handler_filesize(file = "myscript.progress"))
with_progress(y <- slow_sum(1:100))
print(y)
# }
# NOT RUN {
# }
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