On Fri, Mar 30, 2012 at 6:53 AM, Jody Garnett <[email protected]>wrote:
> Is this the thing where you have extra "measures" stored against each
> coordinate.
>
> We have talked about this before - with the idea of some functions which
> could process (say a line string with measures) into a multi line string of
> all the sections that match the requested threads hold ( in your example
> time ranges).
>
The (filter) functions were the first thing that came to mind to me as
well, but it's a dead end: what I need is to slice the returned
geometry, and Query does not allow to extract expressions, just property
names.
That's why I'm proposing a query hint instead.
That said, having a library of functions that can manipulate geometries
once loaded is of course of general interest, but outside
of the current needs
>
> There was some work on this in the Oracle SDO code base (based around
> coordinate sequences) but it looks like we only have the interface left -
> with out the default implementation.
>
svn never forgets, if someone wants to dig and push back the code
Cheers
Andrea
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