Last data update: 2014.03.03
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R: Knob to manipulate a real valued variable
Knob to manipulate a real valued variable
Description
knob creates a slider twiddlerControl for
manipulating real valued numerical variables.
Usage
knob(lim = c(0, 1), res = 0.01, default = lim[1],
label = as.character(NA),
ticks = abs(lim[2] - lim[1])/4, indicator = TRUE,
length = 320)
Arguments
lim |
A vector of two numbers, defining the lower
and upper limits of the slider.
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res |
The resolution or step size of the slider.
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default |
The default numeric value D for the
slider. lim[1] <= D <= lim[2] must hold.
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label |
The text label of the slider.
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ticks |
The tick interval, defaults to
abs(lim[2] - lim[1]) / 4 . Set this to 0 to
suppress drawing of ticks altogether.
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indicator |
Whether to show the current value as an
indicator above the slider's handle, defaults to
TRUE .
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length |
The length of the slider in pixels, default
to 320 .
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Value
A slider twiddlerControl to be used as an argument
to twiddle .
See Also
twiddle
Results
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