Nothing
## Build a t-test gui
w <- gwindow("t-test example")
g <- ggroup(cont = w, horizontal = FALSE)
require(MASS, quietly=TRUE)
dataSets <- c("mtcars","Cars93")
alternatives <- c("two.sided","less","greater")
tbl <- glayout(cont=g)
tbl[1,1] <- glabel("Selecte a data frame:", cont=tbl)
tbl[1,2] <- (selData <- gcombobox(dataSets, selected=0, cont=tbl, editable=TRUE))
tbl[2,1] <- glabel("Select a variable", cont=tbl)
tbl[2,2] <- (selVariable <- gcombobox(c(""),cont = tbl, editable = TRUE))
tbl[3,1] <- glabel("mu:", cont=tbl)
tbl[3,2] <- (selMu <- gedit(0, cont=tbl))
tbl[4,1] <- glabel("alternative:", cont=tbl)
tbl[4,2] <- (selAlt <- gcombobox(alternatives, cont=tbl))
## doesn't work
tbl[5,2] <- (buttonGroup <- ggroup(cont=tbl))
doButton <- gbutton("run t-test", cont=buttonGroup)
doGraph <- gbutton("EDA plot", cont=buttonGroup)
outputArea <- gtext("", cont = g); size(outputArea) <- c(width=500,height=200)
## blank out until ready
enabled(selVariable) <- FALSE
enabled(selMu) <- FALSE
enabled(selAlt) <- FALSE
enabled(buttonGroup) <- FALSE
## handlers
addHandlerChanged(selData, handler = function(h,...) {
enabled(selVariable) <- TRUE
df <- svalue(selData)
df <- get(df, inherits=TRUE) # string to object
selVariable[] <- data.frame(names(df), stringsAsFactors=FALSE)
svalue(selVariable, index=TRUE) <- 0
enabled(selMu) <- FALSE
enabled(selAlt) <- FALSE
enabled(buttonGroup) <- FALSE
svalue(outputArea) <- ""
})
addHandlerChanged(selVariable, handler = function(h,...) {
enabled(selMu) <- TRUE
enabled(selAlt) <- TRUE
enabled(buttonGroup) <- TRUE
})
addHandlerClicked(doButton, handler = function(h,...) {
df <- svalue(selData)
var <- svalue(selVariable)
mu <- svalue(selMu)
alt <- svalue(selAlt)
if(df != "") {
df <- try(get(df, inherits=TRUE), silent=TRUE)
val <- capture.output({
t.test(df[,var], mu=as.numeric(mu), alt=as.character(alt))
})
svalue(outputArea) <- paste(val, collapse="\\n")
}
})
addHandlerClicked(doGraph, handler = function(h,...) {
df <- svalue(selData)
var <- svalue(selVariable)
width <- 400; height <- 300
dpi <- 118
w1 <- gwindow("EDA", parent = w, width=width, height=height+2*25 + 20 + 30)
g1 <- ggroup(horizontal=FALSE, cont=w1, use.scrollwindow=TRUE)
cv <- gsvg(cont = g1, width=width, height=height)
gseparator(cont = g1)
gbutton("dismiss", cont=g1, handler = function(h,...) dispose(w1))
## call within callback, otherwise may not be present
require(RSVGTipsDevice, quietly=TRUE, warn=FALSE)
devSVGTips(f <- getStaticTmpFile(ext=".svg"), width=width/dpi, height=height/dpi)
df <- get(df, inherits=TRUE)
hist(df[, var], main=var)
dev.off()
svalue(cv) <- convertStaticFileToUrl(f)
## show page
visible(w1) <- TRUE
})
## show w
gstatusbar("Powered by RApache and gWidgetsWWW", cont = w)
visible(w) <- TRUE
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