I am struggling with the normalization in Athena. When I plot u(E) and pre-ede and normalization ranges, I get a question mark on the plot instead of the normal cross (see below). Can you please help me solve this problem?
I think the first thing to try is make sure that the gnuplot terminal is set to be "wxt". That is, in preferences window, find "gnuplot", then "terminal" and set the value to "wxt" and save that for all sessions.