[Insight-users] MakeFourierSeriesPathTraceChainCode

[Miller, James V (Research)]

I want to construct a fourier series decomposition of a function.  Rather
than write new code, I decided to try to use PolyLineParametricPath,
ChainCodePath, and FourierSeriesPath.  I used my function values as the path
positions (1D) for the PolyLineParametricPath, used MakeChainCodeTracePath
to convert this path (function) to a chain code, and then used
MakeFourierSeriesPathTraceChainCode to perform the fourier decomposition.
 
Evaluating positions on the fourier series path yields a curve that does not
approximate the
original (cyclic) function well.  I am starting with 30 points in the
polyline, ending up with 20000 points on the chain code (my function has a
strange scale).
 
Does anyone have experience with the FourierSeriesPath?
 
I realize that I do not have a path as the authors originally intended but
it seems to me that I should be able to use the FourierSeriesPath to
approximate any cyclic function.
 
 

Jim Miller 
_____________________________________
Visualization & Computer Vision
GE Research
Bldg. KW, Room C218B
P.O. Box 8, Schenectady NY 12301

millerjv at research.ge.com <mailto:millerjv at research.ge.com> 

james.miller at research.ge.com
(518) 387-4005, Dial Comm: 8*833-4005, 
Cell: (518) 505-7065, Fax: (518) 387-6981 

 
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