progress_progressr {progressr} | R Documentation |
A "progress bar" for plyr's .progress
argument.
progress_progressr(...)
... |
Not used. |
A named base::list that can be passed as argument .progress
to any of plyr function accepting that argument.
One can use use doFuture::registerDoFuture()
to run plyr functions
in parallel, e.g. plyr::l_ply(..., .parallel = TRUE)
. Unfortunately,
using .parallel = TRUE
disables progress updates because, internally,
plyr forces .progress = "none"
whenever .parallel = TRUE
.
Thus, despite the future ecosystem and progressr would support
it, it is not possible to run dplyr in parallel and get progress
updates at the same time.
if (requireNamespace("plyr", quietly=TRUE)) { with_progress({ y <- plyr::llply(1:10, function(x) { Sys.sleep(0.1) sqrt(x) }, .progress = "progressr") }) }