[postgis-devel] [PostGIS] #2122: [raster] Real extent feature lost after metadata as views

[Sandro Santilli]

On Mon, Dec 03, 2012 at 04:29:14PM +0000, Mateusz Loskot wrote:
> On 3 December 2012 16:05, Sandro Santilli <strk at keybit.net> wrote:
> > On Mon, Dec 03, 2012 at 03:13:00PM +0000, Mateusz Loskot wrote:
> >> On 1 December 2012 16:03, Sandro Santilli <strk at keybit.net> wrote:
> >>
> >> Despite technically possible tohandle, it would complicate things though.
> >> Is actual blocksize < max_blocksize_x|y allowed only along the right and
> >> the bottom edge?
> >
> > No, I think it should be allowed everywhere
> 
> Then, we no longer discuss blocking in a regular grid.

It'd be a regular-constrained grid

> > I guess GDAL could just ensure the same blocksize when reading the rasters.
> > There's an ST_Resize function IIRC.
> 
> This is optimisation feature, cache feature, predictable memory constraint, etc.

The max size constraint would still give you predictable memory.
You should be more specific about the cache and optimisation parts.

> The original issue of spatial extent remains unresolved.

The original issue was that the raster file extent is lost on
import, and this loss is only due to padding, no ?

--strk;