FileProgressBar
A progress bar that sets the size of a file accordingly
Package: R.utils Class FileProgressBar
Object
~~|
~~+--ProgressBar
~~~~~~~|
~~~~~~~+--FileProgressBar
Directly known subclasses:
public static class FileProgressBar extends ProgressBar
- Keywords
- classes
Usage
FileProgressBar(pathname=NULL, ...)Arguments
- pathname
The pathname of the output file.
- ...
Other arguments accepted by the
ProgressBarconstructor.
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.
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: $, $<-, [[, [[<-, as.character, attach, attachLocally, clearCache, clearLookupCache, clone, detach, equals, extend, finalize, getEnvironment, getFieldModifier, getFieldModifiers, getFields, getInstantiationTime, getStaticInstance, hasField, hashCode, ll, load, names, objectSize, print, save
Examples
# NOT RUN {
# }
# NOT RUN {
# Creates a progress bar (of length 100) that displays it self as a file.
pb <- FileProgressBar(file.path(tempdir(), "progress.simulation"), max = 10L)
reset(pb)
while (!isDone(pb)) {
x <- rnorm(3e4)
increase(pb)
# Emulate a slow process
if (interactive()) Sys.sleep(0.1)
cat(sprintf("File size: %d bytes\n", file.info(pb$pathname)$size))
Sys.sleep(0.01)
}
# }
# NOT RUN {
# }