Re: [Geotools-gt2-users] multi-band coverage vs coverage stack

[Martin D. <mar...@ge...>]

Michael Bedward a écrit :
> I see that one can store multi-band data in a coverage and select the
> 'visible' band.  I've also discovered the CoverageStack class, which
> is smart enough to cope with coverages with different ref systems etc.
> 
> When dealing with a sequence of rasters with a common crs and
> resolution, a time sequence for example, are there reasons to choose
> one approach over the other ?

I have no clear recommandation for this one... It is really at your choice, as 
you feel most convenient.

I tend to use the "as data are stored" approach. If the image has many bands and 
I want all of them in memory, I load them "as is".

If you time series is long, it may be preferrable to use CoverageStack which 
allows deferred loading (well, actually the multi-bands image allows deferred 
loading as well, but on a tile-basis rather than band-basis).

	Martin