Are you particularly attached to the idea of using tcltk? I've been working on something similar using the gWidgets
package and have had some success. According to it's CRAN site, "gWidgets provides a toolkit-independent API for building interactive GUIs". This package uses tcltk or GTK2 and I've been using the GTK2 portion. Here's a quick example of a GUI with a spinbutton for changing i
. I also added a little fanciness to your function because you mentioned you would be plotting time series, so I made the x axis Time.
data<-data.frame(rnorm(11),rnorm(11),rnorm(11))
i = 1
fplot <- function(i, data = data){
library(ggplot2)
TimeStart <- as.Date('1/1/2012', format = '%m/%d/%Y')
plotdat <- data.frame(Value = data[ ,i], Time = seq(TimeStart,TimeStart + nrow(data) - 1, by = 1))
myplot <- ggplot(plotdat, aes(x = Time, y = Value))+
geom_line()
print(myplot)
}
library(gWidgets)
options(guiToolkit = 'RGtk2')
window <- gwindow ("Time Series Plots", visible = T)
notebook <- gnotebook (cont = window)
group1 <- ggroup(cont = notebook, label = "Choose i", horizontal=F)
ichooser <- gspinbutton(cont = group1, from = 1, to = ncol(data), by = 1, value = i, handler = function(h,...){
i <<- svalue(h$obj)})
plotbutton <- gbutton('Plot', cont = group1, handler=function(h,...){
fplot(i, data)})
graphicspane1 <- ggraphics(cont = group1)