Yes. In image.jl comment line 30 and un-comment line 31. It displays then a movable square, filled with gradually changing colors. In volume.jl comment line 50. It will display 3 pairwise perpendicular planes, each with a square grid on it. We can rotate and move them.
However, the images appear quite slowly. My fast 6-core PC with 16GB memory and good video card takes half a minute to show the 3 planes. Also, if I rotate them, funny artifacts appear then disappear. Are these due to the experimental nature of the GLPlot project or to the Julia interface?
