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-
-
- This directory contains pictures of subranges of the mandelbrot set.
- The format is 1140x890x8. They are computed and colored using mandtool,
- an interactive program running under SunView at
-
- University of Karlsruhe
- Department of Computer Science
- Operating Systems Research Group
-
- 76128 Karlsruhe / Germany
-
- The filenames represent the hierarchy of subranges where we found these
- areas. The top level picture of the whole set is simply named '0', subranges
- selected within that picture are named 'a', 'b', 'c' and so on.
- Second level subranges selected within 'b' are named 'ba', 'bb' etc. I guess
- you got it by now. For keeping names shorter we (or mandtool) always
- compresses multiple occurences of the same letter to a count and the letter.
- For instance, the name 'abaaaabbc' is compressed to 'ab4a2ba'.
- (In this way the '0' represents no letter at all.)
-
- The image size stems from the fact that our sun color frame buffers are
- 1152 pixels wide by 900 high. Then lose 5 pixel each side for the
- SunView frame and you have 1140x890.
-
- The mandelbrot daemon calculates new pictures in the background,
- while mandtool is run only occasinally when new pictures have been
- calculated by the daemon. The daemon produces only the iteration values that
- can be (in this version) as high as 65535=2^15-1. The compression to an
- 8-bit color map is done interactively in mandtool, a process that still takes
- about a minute. The actual color map is also created/modified interactively,
- and it is this process of compressing the iteration values and coloring the
- image that creates/reveals much of the beauty in the mandelbrot set.
-
- If there are any questions, please e-mail to ukrueger@ira.uka.de
-
- Enjoy!
-
- Uwe
-
- Please note: All these pictures are subranges of the mandelbrot set. There are
- no pictures of julia sets in this directory!
-