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Challenging question - array curve fitting [message #53148]

Tue, 27 March 2007 01:37

Qing
Messages: 12
Registered: February 2007

Junior Member

G'day folks,

I have a time series of images represented by a 3D array as Data(Nx,
Ny, Nt) or Data (Nt, Nx, Ny). I would like to apply a non-linear curve
fitting to the time dimension for every pixel respectively. I can loop
through every pixel using 1-D curve fitting procedure, but the process
is slow and it does not make efficient use of multiple CPUs.

Theoretically I would think it should be feasible to perform curve
fitting for all pixels simultaneously via matrix operation? However,
all the IDL's fitting routines only accept vectors for input
parameters to my knowledge. Does anyone know if there is any non-
linear fitting routines that accept array parameters. Or can anyone
comment on whether such a routine is feasible at all?

Qing ;-?

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[Message index]

		Challenging question - array curve fitting By: Qing on Tue, 27 March 2007 01:37
		Re: Challenging question - array curve fitting By: Craig Markwardt on Thu, 29 March 2007 08:07
		Re: Challenging question - array curve fitting By: Qing on Tue, 03 April 2007 06:31
		Re: Challenging question - array curve fitting By: Craig Markwardt on Sun, 22 April 2007 19:49
		Re: Challenging question - array curve fitting By: Qing on Tue, 24 April 2007 05:49
		Re: Challenging question - array curve fitting By: JD Smith on Tue, 03 April 2007 13:25
		Re: Challenging question - array curve fitting By: Craig Markwardt on Sun, 22 April 2007 20:50

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