home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Skunkware 5
/
Skunkware 5.iso
/
lib
/
mandel
/
pathos.danielg
< prev
Wrap
Text File
|
1993-11-23
|
2KB
|
50 lines
:
# Path: hobbes!uunet!autodesk!m31!danielg
# From: danielg@autodesk.com
# Newsgroups: sci.fractals
# Subject: Re: Periodicity checking on m
# Message-ID: <18782@autodesk.COM>
# Date: 24 Mar 93 01:55:28 GMT
# References: <C3vKD7.1v4@world.std.com>
# Sender: news@Autodesk.COM
# Reply-To: danielg@autodesk.com
# Organization: Autodesk, Inc.
# Lines: 33
#
# In article 1v4@world.std.com, mrob@world.std.com (Robert P Munafo) writes:
# > > ... The boundary tracing method will only
# > > calculate the pixels on the boundary of the lake/lakelets, and the
# > > boundary is the absolute worst place for picking up periodicity ...
# [...]
# > The bottom line is that period-checking will always improve your program's
# > speed if the iteration limit is sufficiently high.
#
# That depends on which part of the complex plane you are trying to image.
# The region centered at:
# C = (-.228757644604481030770, -.640230266918152768341)
# With a span of 3.57e-06 units is a *very* pathologic region.
# I've not tried period-checking on this region, but I doubt very
# much if it (or any other tricks) can help much at all. By the
# way, you will need an iteration limit of around 100,000 to get
# a reasonable image which I think you would classify as "sufficiently
# high".
#
# Have fun!
#
#
# ---
# Daniel Green ___________ ___________
# danielg@autodesk.com | | | |
# | _________ | _________
# | | | | | |
# | | _______ | | _______
# | | | | | | | |
# ---| | _____ --| | _____
# ---| | D | --| | D |
# ---| G| --| G|
# wall-eyed stereo --> ----- -----
#
#
#
mandel -T -K 10000 -x -.228757644604481030770 -y -.640230266918152768341 -w 0.00000357 -h 0.00000357 $*