rp.do {rpanel}R Documentation

Runs a user written callback function

Description

Runs a user written callback function, passing a panel to it as a parameter. This should be used to get the rpanel into its intial state. For instance it is useful when using radiobuttons as these do not automatically call the action function when the controls are first created.

Usage

rp.do(panel, action = I)

Arguments

panel

the panel to be passed as a parameter to the function. This may be passed as a panelname string or the panel object itself.

action

the function to be executed.

Value

If the parameter panel is the panelname string the same string is returned. If the panel object is used the altered panel is assigned to both the calling level and panel's environment level.

References

rpanel: Simple interactive controls for R functions using the tcltk package. Journal of Statistical Software, 17, issue 9.

See Also

rp.radiogroup

Examples

if (interactive()) {
   data.plotfn <- function(panel) {
     if (panel$plot.type == "histogram") 
       hist(panel$x)
     else 
       if (panel$plot.type == "boxplot")
         boxplot(panel$x)
       else 
         plot(density(panel$x))
     panel
   }
   panel <- rp.control(x = rnorm(50))
   rp.radiogroup(panel, plot.type, 
          c("histogram", "boxplot", "density estimate"), 
          action = data.plotfn, title = "Plot type")     
   rp.do(panel, data.plotfn)
   }

[Package rpanel version 1.0-6 Index]