The code creates a specific 3d plot, and creates a number of global variables, and creates four functions some of which work based upon four of the global variables.
What are you hoping that the converted code will do?
I am part way through the automatic conversion, but the way to proceed is going to depend upon the goals.
One subtle point is whether you need to change the 16 16 12 size or if those can be considered fixed. The automatic code conversion does not like the sizes to be variable.
