R/statistics-nonparametric-menu.R

In RcmdrDevel: R Commander

# Statistics Menu dialogs

# last modified 2014-07-30 by J. Fox

# Nonparametric tests menu

twoSampleWilcoxonTest <- function () {
  defaults <- list(initial.group = NULL, initial.response = NULL, initial.alternative = "two.sided", 
                   initial.test = "default", initial.label=NULL, initial.tab=0)
  dialog.values <- getDialog("twoSampleWilcoxonTest", defaults)
  initializeDialog(title = gettextRcmdr("Two-Sample Wilcoxon Test"), use.tabs=TRUE)
  groupBox <- variableListBox(dataTab, TwoLevelFactors(), title = gettextRcmdr("Groups (pick one)"),
                              initialSelection = varPosn(dialog.values$initial.group, "twoLevelFactor"))
  responseBox <- variableListBox(dataTab, Numeric(), title = gettextRcmdr("Response Variable (pick one)"),
                                 initialSelection = varPosn(dialog.values$initial.response, "numeric"))
  onOK <- function() {
    tab <- if (as.character(tkselect(notebook)) == dataTab$ID) 0 else 1
    group <- getSelection(groupBox)
    if (length(group) == 0) {
      errorCondition(recall = twoSampleWilcoxonTest, message = gettextRcmdr("You must select a groups variable."))
      return()
    }
    response <- getSelection(responseBox)
    if (length(response) == 0) {
      errorCondition(recall = twoSampleWilcoxonTest, message = gettextRcmdr("You must select a response variable."))
      return()
    }
    alternative <- as.character(tclvalue(alternativeVariable))
    test <- as.character(tclvalue(testVariable))
    closeDialog()
    putDialog("twoSampleWilcoxonTest", list(initial.group = group, initial.response = response, 
                                            initial.test = test, initial.alternative = alternative, initial.label=.groupsLabel, initial.tab=tab))
    .activeDataSet <- ActiveDataSet()
    doItAndPrint(paste("with(", .activeDataSet, ", tapply(", paste( 
      response, sep = ""), ", ", paste( 
        group, sep = ""), ", median, na.rm=TRUE))", sep = ""))
    if (test == "default") {
      doItAndPrint(paste("wilcox.test(", response, " ~ ", 
                         group, ", alternative=\"", alternative, "\", data=", 
                         .activeDataSet, ")", sep = ""))
    }
    else doItAndPrint(paste("wilcox.test(", response, " ~ ", 
                            group, ", alternative='", alternative, "', exact=", 
                            test == "exact", ", correct=", test == "correct", 
                            ", data=", .activeDataSet, ")", sep = ""))
    tkfocus(CommanderWindow())
  }
  OKCancelHelp(helpSubject = "wilcox.test", reset = "twoSampleWilcoxonTest",
               apply = "twoSampleWilcoxonTest")
  radioButtons(optionsTab, name = "alternative", buttons = c("twosided", 
                                                             "less", "greater"), values = c("two.sided", "less", "greater"), 
               labels = gettextRcmdr(c("Two-sided", "Difference < 0", 
                                       "Difference > 0")), initialValue = dialog.values$initial.alternative,
               title = gettextRcmdr("Alternative Hypothesis"))
  radioButtons(optionsTab, name = "test", buttons = c("default", "exact", 
                                                      "normal", "correct"), labels = gettextRcmdr(c("Default", 
                                                                                                    "Exact", "Normal approximation", "Normal approximation with\ncontinuity correction")), 
               initialValue = dialog.values$initial.test,
               title = gettextRcmdr("Type of Test"))
  tkgrid(getFrame(groupBox), labelRcmdr(dataTab, text="  "), getFrame(responseBox), sticky = "nw")
  groupsLabel(optionsTab, groupsBox = groupBox, columnspan = 3, initialText=dialog.values$initial.label)
  tkgrid(alternativeFrame, labelRcmdr(optionsTab, text="  "), testFrame, sticky = "nw")
  dialogSuffix(use.tabs=TRUE, grid.buttons=TRUE)
}

pairedWilcoxonTest <- function () {
  defaults <- list(initial.x = NULL, initial.y = NULL, initial.alternative = "two.sided", 
                   initial.test = "default", initial.tab=0)
  dialog.values <- getDialog("pairedWilcoxonTest", defaults)
  initializeDialog(title = gettextRcmdr("Paired Wilcoxon Test"), use.tabs=TRUE)
  .numeric <- Numeric()
  xBox <- variableListBox(dataTab, .numeric, title = gettextRcmdr("First variable (pick one)"), 
                          initialSelection = varPosn(dialog.values$initial.x, "numeric"))
  yBox <- variableListBox(dataTab, .numeric, title = gettextRcmdr("Second variable (pick one)"), 
                          initialSelection = varPosn(dialog.values$initial.y, "numeric"))
  onOK <- function() {
    tab <- if (as.character(tkselect(notebook)) == dataTab$ID) 0 else 1
    x <- getSelection(xBox)
    y <- getSelection(yBox)
    closeDialog()
    alternative <- as.character(tclvalue(alternativeVariable))
    test <- as.character(tclvalue(testVariable))
    putDialog("pairedWilcoxonTest", list(initial.x = x, initial.y = y, 
                                         initial.test = test, initial.alternative = alternative, initial.tab=tab))
    if (length(x) == 0 | length(y) == 0) {
      errorCondition(recall = pairedWilcoxonTest, message = gettextRcmdr("You must select two variables."))
      return()
    }
    if (x == y) {
      errorCondition(recall = pairedWilcoxonTest, message = gettextRcmdr("The two variables must be different."))
      return()
    }
    .activeDataSet <- ActiveDataSet()
    doItAndPrint(paste("with(", .activeDataSet, ", median(", x, 
                       " - ", y, ", na.rm=TRUE)) # median difference", 
                       sep = ""))
    if (test == "default") {
      doItAndPrint(paste("with(", .activeDataSet, ", wilcox.test(", 
                         x, ", ", y, ", alternative='", 
                         alternative, "', paired=TRUE))", sep = ""))
    }
    else if (test == "exact") {
      doItAndPrint(paste("with(", .activeDataSet, ", wilcox.test(", 
                         x, ", ", y, ", alternative='", 
                         alternative, "', exact=TRUE, paired=TRUE))", sep = ""))
    }
    else {
      doItAndPrint(paste("with(", .activeDataSet, ", wilcox.test(",  
                         x, ", ",y, ", alternative='", 
                         alternative, "', correct=", test == "correct", 
                         ", exact=FALSE, paired=TRUE))", sep = ""))
    }
    tkfocus(CommanderWindow())
  }
  OKCancelHelp(helpSubject = "wilcox.test", reset = "pairedWilcoxonTest",
               apply = "pairedWilcoxonTest")
  radioButtons(optionsTab, name = "alternative", buttons = c("twosided", 
                                                             "less", "greater"), values = c("two.sided", "less", "greater"), 
               labels = gettextRcmdr(c("Two-sided", "Difference < 0", 
                                       "Difference > 0")), title = gettextRcmdr("Alternative Hypothesis"), 
               initialValue = dialog.values$initial.alternative)
  radioButtons(optionsTab, name = "test", buttons = c("default", "exact", 
                                                      "normal", "correct"), labels = gettextRcmdr(c("Default", 
                                                                                                    "Exact", "Normal approximation", "Normal approximation with\ncontinuity correction")), 
               title = gettextRcmdr("Type of Test"), initialValue = dialog.values$initial.test)
  tkgrid(getFrame(xBox), labelRcmdr(dataTab, text="  "), getFrame(yBox), sticky = "nw")
  tkgrid(alternativeFrame, labelRcmdr(optionsTab, text="  "), testFrame, sticky = "nw")
  dialogSuffix(use.tabs=TRUE, grid.buttons=TRUE)
}

KruskalWallisTest <- function () {
  defaults <- list(initial.group = NULL, initial.response = NULL)
  dialog.values <- getDialog("KruskalWallisTest", defaults)
  initializeDialog(title = gettextRcmdr("Kruskal-Wallis Rank Sum Test"))
  dataFrame <- tkframe(top)
  groupBox <- variableListBox(dataFrame, Factors(), title = gettextRcmdr("Groups (pick one)"),
                              initialSelection = varPosn(dialog.values$initial.group, "factor"))
  responseBox <- variableListBox(dataFrame, Numeric(), title = gettextRcmdr("Response Variable (pick one)"),
                                 initialSelection = varPosn(dialog.values$initial.response, "numeric"))
  onOK <- function() {
    group <- getSelection(groupBox)
    if (length(group) == 0) {
      errorCondition(recall = KruskalWallisTest, message = gettextRcmdr("You must select a groups variable."))
      return()
    }
    response <- getSelection(responseBox)
    closeDialog()
    putDialog("KruskalWallisTest", list(initial.group = group, initial.response = response))
    if (length(response) == 0) {
      errorCondition(recall = KruskalWallisTest, message = gettextRcmdr("You must select a response variable."))
      return()
    }
    .activeDataSet <- ActiveDataSet()
    doItAndPrint(paste("with(", .activeDataSet, ", tapply(", paste( 
      response, sep = ""), ", ", paste( 
        group, sep = ""), ", median, na.rm=TRUE))", sep = ""))
    doItAndPrint(paste("kruskal.test(", response, " ~ ", 
                       group, ", data=", .activeDataSet, ")", sep = ""))
    tkfocus(CommanderWindow())
  }
  OKCancelHelp(helpSubject = "kruskal.test", reset = "KruskalWallisTest",
               apply = "KruskalWallisTest")
  tkgrid(getFrame(groupBox), labelRcmdr(dataFrame, text="   "), getFrame(responseBox), sticky = "nw")
  tkgrid(dataFrame, sticky="w")
  tkgrid(buttonsFrame, sticky = "ew")
  dialogSuffix()
}

FriedmanTest <- function () {
	defaults <- list(initial.response = NULL)
	dialog.values <- getDialog("FriedmanTest", defaults)
	initializeDialog(title = gettextRcmdr("Friedman Rank Sum Test"))
	responseBox <- variableListBox(top, Numeric(), selectmode = "multiple", 
			initialSelection = varPosn(dialog.values$initial.response, "numeric"),
			title = gettextRcmdr("Repeated-Measures Variables (pick two or more)"))
	onOK <- function() {
		responses <- getSelection(responseBox)
		closeDialog()
		putDialog("FriedmanTest", list (initial.response = responses))
		if (length(responses) < 2) {
			errorCondition(recall = FriedmanTest, message = gettextRcmdr("You must select at least two variables."))
			return()
		}
		.activeDataSet <- ActiveDataSet()
		command <- paste("local({\n  .Responses <- na.omit(with(", .activeDataSet, ", cbind(", 
				paste(responses, collapse = ", "), ")))", sep = "")
    command <- paste(command, '\n  cat("\\nMedians:\\n")', sep="")
	  command <- paste(command, "\n  print(apply(.Responses, 2, median))")
		command <- paste(command, "\n  friedman.test(.Responses)\n})")
    doItAndPrint(command)
		tkfocus(CommanderWindow())
	}
	OKCancelHelp(helpSubject = "friedman.test", reset = "FriedmanTest",
	             apply = "FriedmanTest")
	tkgrid(getFrame(responseBox), sticky = "nw")
	tkgrid(buttonsFrame, sticky = "w")
	dialogSuffix()
}