[postgis-devel] Stats

[Bborie Park]

That's fascinating stuff.  Something for the future.  I'm sure raster
will get there someday.  Small steps just like how geometry got
there...

-bborie

On Sat, Dec 1, 2012 at 12:35 PM, Paul Ramsey <pramsey at opengeo.org> wrote:
> No, unfortunately it doesn't work like that. We need a raster system
> that can do voxels, not just pixels. If you're thinking about your
> image coordinates in terms of i,j, or x,y, you aren't going to be able
> to do N-D, no matter how many bands you have available. (Well, not
> entirely true, you could hack a 3-d system by having band one be the z
> coordinate and band two be the z value, but that's as far as that
> trick will take you.)
>
> P.
>
> On Sat, Dec 1, 2012 at 7:51 AM, Sandro Santilli <strk at keybit.net> wrote:
>> On Fri, Nov 30, 2012 at 05:19:08PM -0800, dustymugs wrote:
>>> I guess my initial answer would be: No, not in the same context as in
>>> geometry.
>>>
>>> Having said that, things like elevation datasets (NED) could have the
>>> band pixel values considered the Z axis while the X and Y axes are the grid.
>>>
>>> I don't know what the fourth dimension would be... time?
>>
>> How about a dimension each band ?
>> Would be a minimum of 3 dimensions per raster.
>>
>> Can we have that Paul ?
>>
>> --strk;
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