statistical process control SPC charts

[oneda...@icloud.com]

I have been learning Python but am not yet on the level that I could help implement this feature in SOFA; however, if anyone out there is on that level, it would be my number 1 requested feature to see added to SOFA Statistics.  My personal reasoning is that I am getting deeper into six sigma and SPC Charts can be extremely useful in numerous situations. 

Any other opinions or anyone else agree?