getChoice {PBSmodelling}R Documentation

Choose One String Item from a List of Choices

Description

Prompts the user to choose one string item from a list of choices displayed in a GUI. The simplest case getChoice() yields TRUE or FALSE.

Usage

getChoice(choice=c("Yes","No"), question="Make a choice: ",
          winname="getChoice", horizontal=TRUE, radio=FALSE,
          qcolor="blue", gui=FALSE, quiet=FALSE)

Arguments

choice vector of strings from which to choose.
question question or prompting statement.
winname window name for the getChoice GUI.
horizontal logical: if TRUE, display the choices horizontally, else vertically.
radio logical: if TRUE, display the choices as radio buttons, else as buttons.
qcolor colour for question.
gui logical: if TRUE, getChoice is functional when called from a GUI, else it is functional from command line programs.
quiet logical: if TRUE, don't print the choice on the command line.

Details

The user's choice is stored in .PBSmod$options$getChoice (or whatever winname is supplied).

getChoice generates an onClose function that returns focus to the calling window (if applicable) and prints out the choice.

Value

If called from a GUI (gui=TRUE), no value is returned directly. Rather, the choice is written to the PBS options workspace, accessible through getPBSoptions("getChoice") (or whatever winname was supplied).
If called from a command line program (gui=FASLE), the choice is returned directly as a string scalar (e.g., answer <- getChoice(gui=F) ).

Note

Microsoft Windows users may experience difficulties switching focus between the R console and GUI windows. The latter frequently disappear from the screen and need to be reselected (either clicking on the task bar or pressing <Alt><Tab>. This issue can be resolved by switching from MDI to SDI mode. From the R console menu bar, select <Edit> and <GUI preferences>, then change the value of “single or multiple windows” to SDI.

See Also

chooseWinVal, getWinVal, setWinVal

Examples

## Not run: 
#-- Example 1
getChoice(c("Fame","Fortune","Health","Beauty","Lunch"),
   "What do you want?",qcolor="red",gui=F)

#-- Example 2
getChoice(c("Homer Simpson","Wilberforce Humphries","Miss Marple"),
   "Who`s your idol?",horiz=F,radio=T,gui=F)
## End(Not run)

[Package PBSmodelling version 2.06 Index]