tkProgressBar: Progress Bars via Tk

Description

Put up a Tk progress bar widget.

Usage

tkProgressBar(title = "R progress bar", label = "",
              min = 0, max = 1, initial = 0, width = 300)
getTkProgressBar(pb)
setTkProgressBar(pb, value, title = NULL, label = NULL)
# S3 method for tkProgressBar
close(con, …)

Arguments

title, label

character strings, giving the window title and the label on the dialog box respectively.

min, max

(finite) numeric values for the extremes of the progress bar.

initial, value

initial or new value for the progress bar.

width

the width of the progress bar in pixels: the dialog box will be 40 pixels wider (plus frame).

pb, con

an object of class "tkProgressBar".

…

for consistency with the generic.

Value

For tkProgressBar an object of class "tkProgressBar".

For getTkProgressBar and setTkProgressBar, a length-one numeric vector giving the previous value (invisibly for setTkProgressBar).

Details

tkProgressBar will display a widget containing a label and progress bar.

setTkProgessBar will update the value and for non-NULL values, the title and label (provided there was one when the widget was created). Missing (NA) and out-of-range values of value will be (silently) ignored.

The progress bar should be closed when finished with.

This will use the ttk::progressbar widget for Tk version 8.5 or later, otherwise R's copy of BWidget's progressbar.

Examples

Run this code

# NOT RUN {
<!-- % popups are irritating -->
pb <- tkProgressBar("test progress bar", "Some information in %",
                    0, 100, 50)
Sys.sleep(0.5)
u <- c(0, sort(runif(20, 0, 100)), 100)
for(i in u) {
    Sys.sleep(0.1)
    info <- sprintf("%d%% done", round(i))
    setTkProgressBar(pb, i, sprintf("test (%s)", info), info)
}
Sys.sleep(5)
close(pb)
# }

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