Text progress bar in the R console.
txtProgressBar(min = 0, max = 1, initial = 0, char = "=",
width = NA, title, label, style = 1, file = "")getTxtProgressBar(pb)
setTxtProgressBar(pb, value, title = NULL, label = NULL)
# S3 method for txtProgressBar
close(con, …)
(finite) numeric values for the extremes of the
progress bar. Must have min < max.
initial or new value for the progress bar. See ‘Details’ for what happens with invalid values.
the character (or character string) to form the progress bar.
the width of the progress bar, as a multiple of the width
of char. If NA, the default, the number of characters
is that which fits into getOption("width").
the ‘style’ of the bar -- see ‘Details’.
an open connection object or "" which indicates
the console: stderr() might be useful here.
an object of class "txtProgressBar".
ignored, for compatibility with other progress bars.
for consistency with the generic.
For txtProgressBar an object of class "txtProgressBar".
For getTxtProgressBar and setTxtProgressBar, a
length-one numeric vector giving the previous value (invisibly for
setTxtProgressBar).
txtProgressBar will display a progress bar on the R console
(or a connection) via a text representation.
setTxtProgessBar will update the value. Missing
(NA) and out-of-range values of value will be
(silently) ignored. (Such values of initial cause the progress
bar not to be displayed until a valid value is set.)
The progress bar should be closed when finished with: this
outputs the final newline character.
style = 1 and style = 2 just shows a line of
char. They differ in that style = 2 redraws the line
each time, which is useful if other code might be writing to the R
console. style = 3 marks the end of the range by | and
gives a percentage to the right of the bar.
winProgressBar,
tkProgressBar.
Windows versions of R also have winProgressBar.