[GRASS-user] harmonic analysis of time series

[Daniel Victoria]

Nice! Will give it a try. I've been using FFT transforms to help map
agricultural areas using MODIS time series. So far I've been filtering the
data using a simple procedure but I'll now test to see if the hants
filtering can improve agricultural area mapping.

Cheers
Daniel


On Sat, Jan 19, 2013 at 1:18 PM, Markus Metz
<markus.metz.giswork at gmail.com>wrote:

> There is a new add-on module for GRASS 7 to perform harmonic analysis
> of time series (HANTS), a kind of customized FFT, after Roerink et al
> (2000). The original purpose was to reconstruct NDVI time series, but
> it works with all kinds of time series that show periodicity. The
> module is called r.hants.
>
> Enjoy!
>
> Markus M
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