I want Maple to execute the following code over and over again (exepct for with(combinat) of course)

with(combinat):
unassign(anames(user)):

I need to use a function that transform a 3 coordonates point (x,y,z) into a 2 coordonates point (x,y) on a specified projection plane, which I called fg. I have the function, but I need to apply it to over a thousand points. Is there a more efficient way than what I did below to do so?