[gdal-dev] WCS driver

[Ari Jolma]

Even Rouault kirjoitti 24.10.2017 klo 13:28:
>
> > The netcdf files I looked at through the GDAL driver had time and/or
>
> > depth offered as different gdal layers, and offered different variables
>
> > (i.e. different coverages) as subdatasets.
>
> Yes, although in the WCS case, a coverage can have several bands, and 
> thus using the band mechanism to reflect the N>2 dimensions can become 
> confusing.
>

Also in NetCDF the time dimension may be as bands - at least I have 
marine research data which opens first as having two subdatasets (mean 
and max wave height) and then as bands (the monthly values).


> The only clean solution to that would be to have a true 
> multidimensional raster support at the GDAL API level, but that's a 
> rather involved effort.
>

Above the division to subdatasets and bands seems arbitrary and perhaps 
not user controllable. I agree it would be useful to have a better data 
model in this respect.

Ari

> >
>
> > Which other GDAL drivers give direct access to time-varying raster
>
> > stacks in single files?
>
> I guess HDF5, as it is really close to netCDF.
>
> GRIB could potentially be used to have time-varying raster, although, 
> from what I saw, generally you put instead different variables for the 
> same forecast time in the same file. But technically you couldx just 
> concatenate any amount of GRIB messages into a single file and this 
> will be seen as a multi-band raster by GDAL.
>
> Even
>
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>
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