gwidgets

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 action in simulation. int.func <- function(x){ out <- x*2 return(out) } # Abstract representation of second

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). 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 that, I think you may struggle to get autocomplete working in a portable way for scanf / readline without

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 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() grp <- ggroup(container = win) t1 <- gtable(cc, container = grp) #Refresh widget delete(grp, t1) t1 <-

I am trying to develop a GUI (using gWidgets) for an R package. My plan was to construct a main window holding the data, and with buttons calling small gui wrappers for each function. Unfortunately I am stuck on a basic(?) problem - I don't know how to transfer the data. Questons: How to properly send data between separate windows? How to send data from within a handler in another window? My problem is similar to: Loading and saving variables in R with gWidgets , but from what I have read the use of .GlobalEnv is not recommended. I have also seen someone using the <<- operator: http://www.mail

In a Drawing Area of ggraphics in gWidgets changes the mouse cursor to "GDK_TCROSS",but i want the same mouse cursor of the gwindow "GDK_LEFT_PTR": library(gWidgets) library(gWidgetsRGtk2) library(RGtk2) options(guiToolkit = "RGtk2") w=gwindow("") g=ggraphics(cont=w,no_popup=T,do.rubber.banding = F) plot(x,y) c=gdkCursorNew("GDK_TOP_LEFT_ARROW") getToolkitWidget(g)$ModifyCursor(c) or gtkWidgetModifyCursor(getToolkitWidget(g),"GDK_TCROSS","GDK_LEFT_PTR") but this not works gtkWidgetModifyCursor modifies the colors of the cursor. You need to set the cursor through gdkWindowSetCursor . For that

I'm experimenting with gWidgetsWWW and encountered a strange error. I created a button with a handler to knit2html a report which used the data.table assignment operator ":=". The report came back with this error: Error: := is defined for use in j only, and (currently) only once; i.e., DT[i,col:=1L] and DT[,newcol:=sum(colB),by=colA] are ok, but not DT[i,col]:=1L, not DT[i]$col:=1L and not DT[,{newcol1:=1L;newcol2:=2L}]. Please see help(":="). Check is.data.table(DT) is TRUE. The report generates as expected using knit2html directly and also through RStudio's "Knit HTML" button, so I'm unsure