[postgis-devel] Xing Lin's SoC project (raster support)

Tim Keitt tkeitt at gmail.com
Wed Jul 11 14:50:52 PDT 2007

On 7/11/07, Paul Ramsey <pramsey at refractions.net> wrote:
> I'm a little worried at the quantity of this document that is copied
> verbatim from the Oracle Georaster documentation.  I mean, are we just
> cribbing their whole design directly?  The Oracle model is pretty, but
> it breaks up the rasters into an internal relational model, which pretty
> much requires some sort of toolset for people to load/unload data.

Clearly someone at Oracle liked it -- but I'm not married to any
particular approach. If you have something constructive to add, this
could be seen as an opportunity to do so.

> Second, the documentation stops with the model, it provides no
> functions, or even hint of what functions will be done first. Providing

Yes, this is a good point. I've been pushing Xing to specify what the
function set will be and give some examples of how they will work

> objects and no functions, or no data loader, is going to be a pure Waste
> of Time. I know he's not going to have time to copy the complete set of
> Georaster functions from Oracle, so an idea of what functions he plans
> to do first is pretty important.


> PostGIS 0.1 had the types, it had input/output methods, and it had index
> bindings.  If this implementation does not have a way of getting data in
> and out, it's not going to be worth the time putting it together.

Not everything will be accomplished in a single SoC project. What do
you see as most fundamental?


> P.
> Tim Keitt wrote:
> >
> > I'm attaching a proposal to add raster support to postgis. This is
> > Xing Lin's SoC project. I'm hoping to get feedback on the spec and
> > ideas for additions, modifications. Implementation is underway, but
> > its not too late to make changes if people see significant problems or
> > have suggestions.
> >
> > Cheers,
> > Tim
> >
> >
> > ------------------------------------------------------------------------
> >
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> --
>    Paul Ramsey
>    Refractions Research
>    http://www.refractions.net
>    pramsey at refractions.net
>    Phone: 250-383-3022
>    Cell: 250-885-0632
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Timothy H. Keitt, University of Texas at Austin
Contact info and schedule at http://www.keittlab.org/tkeitt/
Reprints at http://www.keittlab.org/tkeitt/papers/
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