DavidRindner
So here is my question. For a given point number, is the random number same all the time every time.
Yes.
rand($PT) will always be the same for a given point.
rand($PT*$PSCALE) doesn't really make sense to me. You want the seed for
the random function to be a constant, so you should multiply by a constant.
Is there a particular reason why you would like to have $PSCALE in the
expression? There is probably a better/correct way to include it.
eetu.