sliderv {TeachingDemos}

Create a Tk slider window

Description

Create a Tk slider window with the sliders positioned vertically instead of horizontally.

Usage

sliderv(refresh.code, names, minima, maxima, resolutions, starts,
  title = "control", no = 0, set.no.value = 0)

Arguments

refresh.code

Function to be called when sliders are moved.

names

Labels for the sliders.

minima

Vector of minimum values for the sliders.

maxima

Vector of maximum values for the sliders.

resolutions

Vector of resolutions for the sliders.

starts

Vector of starting values for the sliders.

title

Title to put at the top of the Tk box.

no

The number of the slider whose value you want.

set.no.value

Vector of length 2 with the number of slider to set and the new value.

Details

This is a variation on the slider function with vertical sliders arranged in a row rather than horizontal sliders arranged in a column.

This is based on an early version of slider and therefore does not have as many bells and whistles (but sometimes fits the screen better).

Value

Returns the value of a given slider when used as: slider(no=i).

Note

You can move the slider in 3 different ways: You can left click and drag the slider itself, you can left click in the trough to either side of the slider and the slider will move 1 unit in the direction you clicked, or you can right click in the trough and the slider will jump to the location you clicked at.

This function may not stay in this package (consider it semi-depricated). See the tkexamp function for another approach to do the same thing.

Author(s)

Greg Snow [e-mail]

See Also

tkexamp, slider

Examples

if(interactive()){
face.refresh <- function(...){
	vals <- sapply(1:15, function(x) slider(no=x))
	faces( rbind(0, vals, 1), scale=F)
}

sliderv( face.refresh, as.character(1:15), rep(0,15), rep(1,15),
	rep(0.05, 15), rep(0.5,15), title='Face Demo')
}