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Re: Open buffers or parallel lines

by Simon Greener-3 :: Rate this Message:

Regina,

> This might help
>
> http://trac.osgeo.org/postgis/wiki/UsersWikiplpgsqlfunctions
>
> upgis_lineshift(centerline geometry, dist double precision)
>
> Though its simplified in the sense it bases on start and end points of
> the linestring to do the shift.
>
> To do true shifting when you have very curvy lines or polygons - you'd
> probably want to use Simon's approach.
>
> http://www.spatialdbadvisor.com/postgis_tips_tricks/128/exploding-a-line
> string-or-polygon-into-individual-vectors-in-postgis/
>
> (hmm I though he had that wrapped more nicely in a function, but can't
> find it).

I have it partially built. Am away consulting. Could finish it next week if Andreas is prepared to wait.

S
--
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