Well, at the time, when I want to use such a function, the display stack is empty. GR has its own graphics backends and can be used as a substitute for Gadfly, PyPlot, etc.
On Friday, June 26, 2015 at 9:50:00 AM UTC-4, Josef Heinen wrote: > > Can anybody tell me, how to find out, whether we are running in a "simple" > terminal session or in a GUI environment (Juni, Jupyter, ...) ? >
