I followed the instructions in the mentioned tutorial but applied to my 3d example, I could see no options for setting the sampling size as it mentions but I think I managed everything else. When coming to plotting the Power Spectrum however even with the “Normalize With:” check box selected the spectrum shows values ranging as high as 4.
Can you suggest why I am not getting values between 0 and 1?
EDIT***: The above was when I used an observation area very close to the Input plane, the next observation area shows .1%. Is it then just an error due to being too close to the Input Plane that gave me this artifact?