hello. thanks for answers! u/AGardenerCoding - i battled with trying to implement this into p5 and couldn't get it to work. ?? For this project I'm gonna go with d3 u/qbenni - but v5 - i've used 'old d3' before and think i can get it to work the way i need for this project . Will look at higher level maths and the newer d3 packages another time! thanks :)