R.utils (version 2.3.0)

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:

	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, names, 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

  ## Not run: 
#   
# # 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)
# }
# 
#   ## End(Not run)