[R] HowTo get callback on destroy of grDevices::windows()

I'm build with the usage of the tcltk/tcltk2 package a gui which is started with rscript.exe. At this gui the user is able to open and close plot windows. Now I'm looking for a way that a r function is called when a grDevices::windows window is closed. Is there a way to attach a callback func

Re: [R] HowTo get callback on destroy of grDevices::windows()

okay, thanks I will try the R-devel list :) BR Roland __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-c

[R] rgl package don't draw points with a color over points with another color

I want to plot points with different colors to show different selections of points in a 3d plot. My problem is that if I plot a red point at a location where already a blue point was plotted, than the point is still blue. Is there a parameter or so which can be used to draw over a existing po