gwidgets

问题 For the past few months I've been building a simulation in R I hope to package. It consists of two usable functions, and many internal ones which one of the two usable functions call while looping, to perform the stages of simulation. A simple conceptual example is: # Abstract representation 1st Usable function, generates object containing settings for simulation. settings <- function(){ matrix(c(1:4),nrow=2,ncol=2) } # Abstract representation of one of many internal functions, does some

问题 Is there a way in R to prompt a user (i.e. scanf) for information and also allow auto-completion of that prompt using an array of strings as possible completions? Basically, looking for something like GNU Readline for R (ideally with an example). 回答1: The autocomplete for function names, etc., seems to be a property of the development environment that is running R. So it works slightly differently in R GUI compared to eclipse compared to emacs compared to RStudio compared to whatever. From

问题 I would like to combo gWidgets(john verzani) with Rgtk2. This could be used by anyone as a paradigm. The algorithm is as follows: STEP 1: Construct a gwindow (or a gframe) STEP 2: Construct a GTK scrollable text view STEP 3: Convert the last one into a gwidget STEP 4: Add it into the gwindow (or into the gframe) I wonder if this is a right thinking while the problem I face is with the GTK scrollable text view: I cannot make the scrollbars work. The code in R is as follows: ###################

问题 I encounter the following problem: library(gWidgets) options(guiToolkit = "RGtk2") aa <- c(1,2,3) bb <- c(4,5,6) cc <- cbind(aa,bb) cc <-as.data.frame(cc) t1 <- gtable(cc, container=TRUE) I want to refresh the content of t1 with: dd <- c(7,8,9) dd <- as.data.frame(dd) But when I run t1[] <- dd I receive: Can't replace with fewer columns Apostolos 回答1: To expand upon John's answer, here's an example. #Data cc <- data.frame(aa = 1:3, bb = 4:6) dd <- data.frame(X = 7:9) #Wigdets win <- gwindow()

问题 I want to change the mouse cursor to a hand, for clicking an image. hlp<-gimage("help", dirname="stock", size="dialog") addHandlerClicked(hlp, handler=function(h,...) { browseURL("http://....")}) I have read other post related but setCursor doesn't work on Widgets. Thank you 回答1: Looking here (how can i change the shape mouse cursor in gWidgets RGtk2?) you can see what you need for RGtk2. Try this: library(RGtk2) w <- gwindow() g <- ggroup(cont=w) gbutton("button", cont=g) img <- gimage("

问题 I'm having a problem with launching the ginput pop-up from gWidgets. This is the error: Loading required package: gWidgetstcltk Error in (function (classes, fdef, mtable) : unable to find an inherited method for function ‘.ginput’ for signature ‘"guiWidgetsToolkittcltk"’ In addition: Warning message: In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE, : there is no package called ‘gWidgetstcltk’ I use the popup to type a number that I then assign to a variable

问题 Consider: require(gWidgets2) w <- gwindow("notebook example", visible=T) nb <- gnotebook(container=w) gbutton("Page one", label="tab 1", container=nb) ## note label argument gbutton("Page two", label="tab 2", container=nb) How can I bind a given key (say, ESC ) to close the gwindow() in gWidgets, that is to execute dispose(w) ? In other words, how do you assign keybindings in gWidgets? 回答1: With RGtk2 (and possibly others) the addHandlerKeystroke method can be used to catch keystrokes. You

问题 In the widget below, is it possible to change the position of the label of the "radio" groups. I would like something like that instead of having "Type" above the items: Type o Quantitative o Qualitative win <- gwindow("Empirical Phase Diagram") BigDataGroup <- ggroup(cont=win) DataGroup <- gframe("Data", container = BigDataGroup, horizontal=FALSE) grp.file <- ggroup(horizontal=FALSE, container = DataGroup) lbl.file <- glabel("File: ", container = grp.file) browse.file <- gfilebrowse

问题 I am trying to create a interface where the user can key in a number for the script to run. However, I am unable to retrieve the value keyed into gedit. Can anyone help me? Here's what I have done: require(gWidgets2RGtk2) #Load package w=gbasicdialog("key number") a<-gedit("1",cont=w,handler=function(h,...){number<-svalue(a)}) visible(w)=TRUE 回答1: Here I create , 2 gedit and update the value of one with the other value using a button: w <- gwindow("test") g <- ggroup(cont=w, horizontal=FALSE)

问题 How can I add a context menu to a gframe in gWidgets2 ? I tried the following construct, but it seems that I cannot attach a addPopupMenu to a gframe : require(gWidgets2) w <- gwindow("gformlayout", visible=T) f <- gframe("frame", horizontal=FALSE, container=w) l <- glabel("Lorem ipsum dolor sit amet, \nconsectetur adipiscing elit.", container=f) b <- gbutton("change name", container=f, handler=function(h,...) { names(f) <- "new name" }) lst <- list(gaction('world', handler=function(h,...)