R.utils (version 2.0.0)

FileProgressBar: A progress bar that sets the size of a file accordingly

Description

Package: R.utils Class FileProgressBar Object ~~| ~~+--ProgressBar ~~~~~~~| ~~~~~~~+--FileProgressBar Directly known subclasses: public static class FileProgressBar extends ProgressBar

Usage

FileProgressBar(pathname=NULL, ...)

Arguments

pathname

The pathname of the output file.

...

Other arguments accepted by the ProgressBar constructor.

Fields and Methods

Methods: rll{ cleanup Removes the progress file for a file progress bar. update Updates file progress bar. }

Methods inherited from ProgressBar: as.character, getBarString, increase, isDone, reset, setMaxValue, setProgress, setStepLength, setTicks, setValue, update

Methods inherited from Object: $, $<-, [[, [[<-, as.character, attach, attachLocally, clearCache, clearLookupCache, clone, detach, equals, extend, finalize, getEnvironment, getFieldModifier, getFieldModifiers, getFields, getInstantiationTime, getStaticInstance, hasField, hashCode, ll, load, objectSize, print, save

Details

A progress bar that sets the size of a file accordingly. This class useful to check the progress of a batch job by just querying the size of a file, for instance, via ftp.

Examples

# Creates a progress bar (of length 100) that displays it self as a file.
pb <- FileProgressBar("~/progress.simulation")
reset(pb)
while (!isDone(pb)) {
  x <- rnorm(3e4)
  increase(pb)
  # Emulate a slow process
  if (interactive()) Sys.sleep(0.1)
  Sys.sleep(0.01)
}