Is there a way to embed the function edit(dataframe) in gwindow?
example:
DataFrame <- data.frame(cbind(1,1:10)
edit(DataFrame)
Window <- gwindow()
I would like to embed edit(DataFrame) in Window.
Apostolos
The standard way to do this would be through a button click.
dfr <- data.frame(x = 1:10, y = runif(10))
win <- gwindow()
btnEdit <- gbutton(
"Edit",
container = win,
handler = function(h, ...) dfr <<- edit(dfr)
)
You can be even fancier and decide whether or not the data frame should be editable or just viewable.
win <- gwindow()
btnEdit <- gbutton(
"Edit",
container = win,
handler = function(h, ...)
{
if(svalue(chkReadonly)) View(dfr) else dfr <<- edit(dfr)
}
)
chkReadonly <- gcheckbox(
"Read-only",
FALSE,
container = win,
handler = function(h, ...)
{
svalue(btnEdit) <- if(svalue(h$obj)) "View" else "Edit"
}
)
Based upon your comment, what you want is even easier. Store the data frame in a gdf.
tbl <- gdf(dfr, container = win)
Related
I am trying to put several ginputs into a form in gWidgets2, or to get the text entered in a gedit widget as a list or something to use in the rest of the code,
library(gWidgets2)
options(guiToolkit = "tcltk")
prj_name = ginput("Project name")
user = ginput("User name")
transfer = ginput("Transfer amount")
I tried with gformlayout but they ginput apparently can't be contained in one; and I haven't found how to pass the inputs on the widget to an object (a list in this case) in R
ginput is a dialog. The widget you want is gedit. This example is from the help page of gformlayout
w <- gwindow("gformlayout", visible=FALSE)
g <- gvbox(container=w)
flyt <- gformlayout(container=g)
gedit("", label="Name:", container=flyt)
gedit("", label="Rank:", container=flyt)
gedit("", label="Serial No.:", container=flyt)
b <- gbutton("Show me", container=g, handler=function(h,...) {
print(svalue(flyt))
})
addSpring(g)
visible(w) <- TRUE
x <- gconfirm("Run Program?",title="gConfirm")
if (x){
w <- gwindow(title="List of Programs",visible=TRUE)
g = ggroup(horizontal = FALSE, cont=w)
glabel("Please select the Program", cont=g)
ptype <- c("A","B")
temp <- gcombobox(ptype , cont=g)
addHandlerChanged(temp , handler=function(...){})
gbutton("Run", cont=g,handler = function(...){
print(svalue(temp)
dispose(g)
runagain <- gconfirm("Run again?",title="gConfirm")
if(runagain){
## If user clicks okay, I want to start running again from the third line of the code, w <- gwindow......)**
}
}
Can anyone hint a work around that? Also how do I display the svalue(temp) in to similar UI box instead of printing it on the console. Any help is much appreciated.
SOmething like this might get you what you want:
library(gWidgets2)
programs = list("Program A"="a.R",
"Program B" = "b.R")
w <- gwindow("run programs")
g <- ggroup(cont=w, horizontal=FALSE)
fl <- gformlayout(cont=g)
cb <- gcombobox(names(programs), cont=fl, label="Select a program to run")
b <- gbutton("Run selected program", cont=fl, label="", handler=function(h,...) {
prog <- svalue(cb)
val <- gconfirm(sprintf("Run program %s?", prog), parent=w)
if (val) {
source(programs[[val]])
gmessage("All done", parent=w)
}
})
Adapting an example I can toggle the display of an icon like this:
reject <- "D:/Pictures/web/close32.png"
accept <- "D:/Pictures/web/open32.png"
w= gwindow()
g1 <- ggroup(horizontal=TRUE, cont=w)
icon <- gimage(reject,cont=g1)
state <- FALSE # a global
changeState <- function(h,...) {
if(state) {
svalue(icon) <- reject
} else {
svalue(icon) <- accept
}
state <<- !state
}
addHandlerClicked(icon, handler=changeState)
However, I would like to get this to work with a group of icons
example 3x3 icon grouping http://cran.r-project.org/web/packages/gWidgets/vignettes/gWidgets.pdf
so that each icon can be toggled and I can retrieve the state of the icons as a vector. The purpose is to create a graphical selector for picking pairs of observations to perform analysis on. Here is my attempt. It displays correctly, but does not respond to clicks to change the state. I recognize that I am confusing how the handler and action parameters act together and would appreciate any clarifications and fixes for this code.
reject <- "D:/Pictures/web/close32.png"
accept <- "D:/Pictures/web/open32.png"
w= gwindow()
g1 <- ggroup(horizontal=TRUE, cont=w)
lyt <- glayout(cont=g1, spacing=10)
icon <- rep(reject,times=9)
state <- rep(FALSE, times=9)
changeState <- function(h,...) {
if(state[index]) {
svalue(icon[index]) <- reject
} else {
svalue(icon[index]) <- accept
}
state[index] <<- !state[index]
}
for(i in 1:3){
for(j in 1:3){
ind <- (i-1) * 3 +j
lyt[i,j] <- gimage(icon[ind], cont=lyt)
addHandlerClicked(lyt[i,j], handler=changeState, action= index <-ind)
}
}
1c: http://i.stack.imgur.com/4kbwK.png
The index value must be retrieved from h$action in your handler (index <- h$action). As well, this bit action=index <- ind need only be action=ind.
I'm very new in R and I'm trying to build a GUI using Tcltk package. I'm not sure how the "tkGetOpenFile" works. I thought by using this function it would open and hold my dataset into the workspace of the RStudio. But the only thing that happens is a popup window to choose the file.
The code I'm using is below.
Please help me!!!
require(tcltk)
readCsv <- function(){
myval <- tkgetOpenFile()
mydata <- read.csv(paste(as.character(myval), collapse = " "))
assign("myData", mydata, envir = .GlobalEnv)
}
tt <- tktoplevel()
topMenu <- tkmenu(tt)
tkconfigure(tt, menu = topMenu)
fileMenu <- tkmenu(topMenu, tearoff = FALSE)
tkadd(fileMenu, "command", label = "Quit", command = function() tkdestroy(tt))
tkadd(fileMenu, "command", label = "Load", command = function() readCsv())
tkadd(topMenu, "cascade", label = "File", menu = fileMenu)
tkfocus(tt)
You need to use the tclvalue function to get an R character string representation of a Tcl variable. Modify your function as follows:
readCsv <- function(){
myval <- tclvalue(tkgetOpenFile()) # add `tclvalue` here
mydata <- read.csv(myval) # then `myval` is a character string
assign("myData", mydata, envir = .GlobalEnv)
}
This is probably so simple I will cringe when the answer comes back but I am totally stumped. I have tried the manuals, tried searching the web, assorted examples and anything else I can think of. I am still stuck.
I am trying to create a simple input for the user to add two values I can then use in the rest of the R script. I need the script to pause and wait for the input from the user and then continue along once it gets the input (like how the choose file function works). AFter reading a bunch of stuff I decided to use library(tcltk). I have a nice little box within a function.
inputs <- function(){
xvar <- tclVar("")
yvar <- tclVar("")
tt <- tktoplevel()
tkwm.title(tt,"Input Numbers")
x.entry <- tkentry(tt, textvariable=xvar)
y.entry <- tkentry(tt, textvariable=yvar)
reset <- function()
{
tclvalue(xvar)<-""
tclvalue(yvar)<-""
}
reset.but <- tkbutton(tt, text="Reset", command=reset)
submit <- function() {
x <- as.numeric(tclvalue(xvar))
y <- as.numeric(tclvalue(yvar))
print(x)
print(y)
tkdestroy(tt)
}
submit.but <- tkbutton(tt, text="submit", command=submit)
tkgrid(tklabel(tt,text="Enter Two Inputs"),columnspan=2)
tkgrid(tklabel(tt,text="Input1"), x.entry, pady = 10, padx =10)
tkgrid(tklabel(tt,text="Input2"), y.entry, pady = 10, padx =10)
tkgrid(submit.but, reset.but)
}
When I type in:
inputs()
The nice little box pops up and I can input my values, say 3 and 4 for this example.
I get back
<Tcl>
[1] 3
[1] 4
I want to use those number in a subsequent part of the R code. How do I get them so I can get the equivalent of this?
input1 <- 3
input2 <- 4
Thanks in advance for helping.
Here is a modification of your function:
inputs <- function(){
xvar <- tclVar("")
yvar <- tclVar("")
tt <- tktoplevel()
tkwm.title(tt,"Input Numbers")
x.entry <- tkentry(tt, textvariable=xvar)
y.entry <- tkentry(tt, textvariable=yvar)
reset <- function()
{
tclvalue(xvar)<-""
tclvalue(yvar)<-""
}
reset.but <- tkbutton(tt, text="Reset", command=reset)
submit <- function() {
x <- as.numeric(tclvalue(xvar))
y <- as.numeric(tclvalue(yvar))
e <- parent.env(environment())
e$x <- x
e$y <- y
tkdestroy(tt)
}
submit.but <- tkbutton(tt, text="submit", command=submit)
tkgrid(tklabel(tt,text="Enter Two Inputs"),columnspan=2)
tkgrid(tklabel(tt,text="Input1"), x.entry, pady = 10, padx =10)
tkgrid(tklabel(tt,text="Input2"), y.entry, pady = 10, padx =10)
tkgrid(submit.but, reset.but)
tkwait.window(tt)
return(c(x,y))
}
Now run the function like:
myvals <- inputs()
Now enter your 2 values and click "Submit", then look at the myvals variable, it contains your 2 values.
You have them in the submit callback -- you just need to put them somewhere. Sometimes global variables are best for this. Just use <<- to assign to them so the bindings happen outside of the scope of the submit callback. You can also use an environment for this purpose or even a reference class.