SYNOPSIS

fn psych.4 [arg]

fn psych.4 [par1 par2]

DESCRIPTION

The user function psych.4 generates interesting visual patterns. The patterns are determined by two parameters that you can allow C-PLOT to select or you can choose yourself.

When the function is first invoked, it will ask if you want to use random numbers. If not, it will allow you to enter two numbers. Calling the function with two numerical arguments turns on user selection of parameters, and the arguments become the parameters. Calling the function with a single numerical argument always turns on the random-number mode.

Subsequent calls to psych.4 with fn . will use random numbers or not based on your choice the first time you invoked the function.

When the program is selecting random numbers, values for the first parameter lie between 0 and 10; values for the second parameter will be greater than 0 and less than 20.

EXAMPLE

fn psych.4 0