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dcolor

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dcolor

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14 Oct 2010 (Updated )

Display complex-valued data using domain coloring

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Description

DCOLOR uses a coloring function to map the angle and modulus of complex data to color. This technique is known as domain coloring, and is an excellent tool to explore the behavior of complex-valued functions.

DCOLOR can produce plots using either a complex matrix or a function handle as the source data. There are several built-in coloring functions as well as the option to supply a user-defined coloring function as a function handle. Additionally, the 'grid' option can create contours of the real and imaginary parts of the complex data. See the help text for details and usage examples.

The following references have more information about visualizing complex-valued functions using domain coloring, including example images:

http://www.maa.org/pubs/amm_complements/complex.html

http://www.math.liu.se/~halun/complex/domain_coloring-unicode.html

http://www.mathworks.com/company/newsletters/news_notes/clevescorner/summer98.cleve.html

http://commons.wikimedia.org/wiki/User:Jan_Homann/Mathematics

http://www1.american.edu/academic.depts/cas/mathstat/People/lcrone/ComplexPlot.html

http://en.wikipedia.org/wiki/Domain_coloring

Acknowledgements

Shaded Pseudo Color and Domain Coloring inspired this file.

MATLAB release MATLAB 7.10 (R2010a)
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Comments and Ratings (1)
22 Apr 2014 LUCA

dcolor.m is an excellent Matlab script for domain colouring.
It's user-friendly and versatile.

Updates
30 Nov 2010

- Added ability to supply function handle to calculate W
- Added new coloring functions
- Added grid option
- Reduced memory usage
- Renamed from cplxpcolor.m to dcolor.m

15 Feb 2011

- Added option to return image color data as a matrix of RGB values

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