Hi, T100!
Maybe if you explain what does P1, P2 & P3 mean, what do they represent, why are 1st and 3rd usually zero, how do you want to handle negative values, and so on... then people who read this and might be able to help you could understand your goal. The most important thing about charting is effective communication, then aesthetic issues. So please start by telling us what do you want to communicate, if it'd be for displaying purposes, printing or projecting. Thank you.
Regards!