Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




13.14.  Fractal Explorer

13.14.1.  Overview

Figure 11.214.  The same image, before and after applying Fractal Explorer filter

The same image, before and after applying Fractal Explorer filter
The same image, before and after applying Fractal Explorer filter

13.14.2.  Starting filter

This filter is found in Filters->Render->Nature->Fractal Explorer

13.14.3.  Options

Figure 11.215.  "Parameters" options for Fractal Explorer filter

"Parameters" options for Fractal Explorer filter
Preview domain

Uncheck the Real time preview only if your computer is slow. In this case, you can update preview by clicking on the Redraw button.

By clicking-dragging mouse pointer on preview, you can draw a rectangle delimiting an area which will be zoomed.


You have there some options to zoom in or zoom out. The Undo allows you to return to previous state, before zooming. The Redo allows you to restablish the zoom you had undone, without having to re-create it with the zoom-in button.

Parameters tab

This tab contains some options to set fractal calculation and select fractal type.

Fractal Parameters

here, you have sliders and input boxes to set fractal spreading, repetition and aspect.


You can set fractal spreading betwwen a MINimum and a MAXimum, in the horizontal (X) and/or vertical (Y) directions. Values are from -3.0 to 3.0.


With this parameter, you can set fractal iteration, repetition and so detail. Values are from 0.0 to 1000.0


With these parameters, you can change fractal aspect, in the horizontal (X) and/or vertical (Y) directions, except for Mandelbrot and Sierpinski types.

Open; Reset; Save

With these three buttons, you can save your work with all its parameters, open a previouly saved fractal, or return to the initial state before all modifications.

Fractal type

You can choose what fractal type will be, for instance Mandelbrot, Julia, Barnsley or Sierpinski.

Colors tab

Figure 11.216.  Color tab options

Color tab options

This tab contains options for fractal color setting.

Color number

This slider and its input boxes allow you to set the number of colors for the fractal, between 2 and 8192. A palette of these colors is displayed at the bottom of the tab. Actually, that's a gradient between colors in fractal: you can change colors with “Color intensity ” and “Color function ” options. Fractal colors don't depend on colors of the original image (you can use a white image for fractals as well).

Use loglog-smoothing

Figure 11.217.  Loglog smoothing example

Loglog smoothing example
Color density

These three sliders and their inputboxes allow you to set color intensity in the three Red, Green and Blue color channels. Values vary from 0.0 to 1.0.

Color function

For the Red, Green and Blue color channels, you can select how color will be treated:

  • Sinus: Color variations will be modulated according to the sinus function.

  • Cosinus: Color densities will vary according to cosinus function.

  • None: Color densities will vary linearly.

  • Inversion: if you check this option, higher color values will be swapped with lower ones and vice-versa.

Color Mode

These options allow you to set where color values must be taken.

  • Apply active gradient to final image : used colors will be that of active gradient. You should be able to select another gradient by clicking on the gradient source button.

Fractals tab

Figure 11.218.  Fractal tab” options

Fractal tab options

This tab contains a big list of fractals with their parameters, that you can use as a model: only click on the wanted one.

The Refresh allows you to update the list if you have saved your work, without needing to re-start Gimp. You can delete the selected fractal from the list by clicking on the Delete.

  Published under the terms of the GNU General Public License Design by Interspire