| Re: Request for guidance/advice related to time series analysis and forecasting using MODIS imagery [message #83083 is a reply to message #83077] |
Mon, 04 February 2013 06:02  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Mattijn van Hoek writes:
>
> Hello folks,
> I have read in my recently aqcuired IDL books (from Fanning, Bowman and Gumley) that this Google group is they number one place to be on the internet. By far. I've followed this group for a month and a half and today, I'm going to change my position from being an observor to a participant (yeah!).
>
> With the use of Harmonic Analysis, I have computed 6 time-series with different, but related, anomalies based on the MODIS imagery from the last 10 years.
>
> I would like your opinion/guidance/advice on the following:
>
> 1. What type of spatio-temporal analysis on 6 time-series are possible? And what would you sugest? Cross-dimensional wavelet analysis, multi-dimensional Fourier transform or something else?
> 2. Based on these anomalies I would like to do some short-term spatio-temporal forecasting (1 week). And again, my question what type of time-series forecasting method would you suggest? Wavelet aided time series forecasting, Artificial Neural Networks, Autoregressive models, Wavelet Neural Network or something else?
>
> Hopefully I have been able to make myself clear. If not, please punch me in the face, and I will try to do it again.
Well, welcome! It is always nice when someone comes out of the shadows
to join our discussion. It is stimulating.
I don't wish to discourage anyone who still appears to read (and
purchase!) books, but I suspect these questions may not elicit a lot of
answers, and I want you to know it is not because we are unwelcoming of
new folks. Rather, these appear to be science questions, not IDL
questions. And, while I may be alone in this regard, I find them
confounding. (I wouldn't recognize cross-dimensional wavelet analysis if
it came up to me and bit me in the butt.)
On the other hand, all kinds of people with all kinds of expertise have
been known to hang out here, so there is always a chance someone will
know exactly what you are talking about. But, I've been doing this for a
long, long time, and this is just the kind of question that often
appears on a Monday morning and serves to start the week off on a very
dismal note for me. Reminding me, I suppose, of how little I really know
about so many, many things. :-)
Cheers,
David
P.S. Let's just say the only ray of hope for me in your question is that
it didn't start off with the usual "I'm a novice IDL programmer and I
have a very simple question...".
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")
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