[postgis-users] Geodetic Support

Richard Greenwood richard.greenwood at gmail.com
Sun Jul 8 19:03:27 PDT 2007

On 6/27/07, Paul Ramsey <pramsey at refractions.net> wrote:
> Speaking of which, the more I think about it, the more I like
> Microsoft's "solution" to the problem of supporting both planar and
> polar coordinates, which is to just declare the one problem to be two
> problems, with both a "geometry" (planar) and a "geography" (polar)
> type.  Means you don't have to do SRID lookups to figure out if you are
> geodetic or not, you can have completely different index types without
> any sort of magic switches hiding in the backend, etc.  Really cleans up
> a lot of things.

I can see a lot of good reasons to separate polar and planar data
table-types and the functions that operate on them. I guess a third
type would be geocentric. But pray tell, why refer to it as
"Microsoft's solution"?


Richard Greenwood
richard.greenwood at gmail.com

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