Think of tags as like a book index where you find words and which pages they are on, the same principle applies here. Although it's taken a stage further so it might not be the word, but the subject, so for example if you're looking for things to do with fractal gradients for example. A tag may bring back posts with gradient files, as well as posts that discuss gradients, or tutorials about them.

polar21

polar Variation Information

Polar coordinates are an alternative to the more common rectangular coordinates that simplifies the math for many applications. In fact, about about a quarter of the many JWildfire variations are based on polar coordinates! Understanding them can help us use these variations more effectively.

glynnSim9

glynnSim

The glynnSim variations are a cross between linear and spherical. Using the unit circle as a dividing line, their output has three parts:

Outside the unit circle is whatever was there before (like linear),
Inside the unit circle is a reflection across the unit circle of what was outside the unit circle (like spherical), and
The points that were inside the unit circle are replaced with a blur:

gaussian blur3

gaussian_blur

Carl Frederich Gauss was a preeminent early nineteenth century German mathematician and scientist. Among the many things named for him is the Gaussian distribution, also known as the normal distribution or the bell curve, which is very important in statistics. It also forms the basis of the gaussian_blur variation in JWildfire.