Changing formula parameters

Look at the Tool Windows on the right side of your 

screen and click on the Formula tab of the topmost 

(Layer Properties) window.

While Guessing, the default drawing 

Under the formula name at the top (in this case, 

method, is the fastest method of 

Newton) you will see settings (Drawing Method, 

rendering fractals, it often introduces 

Periodicity Checking, Additional Precision, and Maximum 

artifacts into the image. You may wish 

Iterations) which appear for every fractal formula. The 

to choose either the Multi Pass or One 

parameters specific to this particular formula are listed 

Pass Linear options for accurate 

below the dividing line (in this case: Exponent (Re), 

rendering.

Exponent (Im), Root (Re), and Root (Im)).

The Exponent parameter determines the number of 

"arms" of the Newton fractal structure. The default value 

is "3" so the fractal has three arms. Try entering 

different values in the Exponent (Re) parameter. 

G     

When you have finished experimenting, enter 4 

in the Exponent (Re) parameter. Your fractal 

will look like this:

Try entering negative numbers and 

other values (e.g. .5, 1.2, and .0385) in 

the various parameters and see how 

they twist and fracture the structure. 

At this stage, you may want to change the size of the 

fractal window. To do this, click on the Image tab of the 

second (Fractal Properties) tool window.

You can customize the default fractal 

window size by clicking Options on the 

G     

Make sure the "Maintain Aspect Ratio" option is 

Options menu and selecting the 

checked and then enter a new value in the 

Defaults tab. 

width field.

Next: 

Applying a coloring algorithm

17