[gdal-dev] Multidimensional raster support in GDAL
edzer.pebesma at uni-muenster.de
Wed Nov 1 05:12:24 PDT 2017
On 10/26/2017 07:25 PM, Even Rouault wrote:
>> More in general, we have multidimensional arrays where horizontal space
>> is not an x y image (GDAL raster band) but for instance a sequence of
>> feature geometries (e.g., in situ sensor data, or demographic data by
>> administrative region, time, and age class).
> I didn't grasp what you meant there. This doesn't sound like gridded
> data, does it ? Can you point to such datasets ?
Not gridded in space, but gridded in spacetime. Examples would be, for
point geometries the EEA air quality database , where static station
properties come in one file, and measured air quality measurements (time
series) come in other files, for many parameters; an example where
geometries are regions would be any socio-economic data; concrete
example  for each county you'd have a time series of population
counts by age class (2-dimensional array for each county).
Also look for OLAP cube; the concept is quite old, and not restricted to
spatially gridded data. But I'm happy to restrict the discussion here
(first) to spatially gridded data.
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