[postgis-devel] Geodetic issues

[Chris Hodgson]

Thanks Bryce, I do believe you're right.  However that doesn't explain 
this problem:

http://trac.osgeo.org/postgis/ticket/1170

I'll look a bit deeper.

Chris

Bryce L Nordgren wrote:
>
>
> On Thu, Sep 1, 2011 at 7:26 PM, Paul Ramsey <pramsey at opengeo.org 
> <mailto:pramsey at opengeo.org>> wrote:
>
>
>     > - Is it illegal to have a point on the poles? From
>     ptarray_check_geodetic()
>     > in /liblwgeom/lwgeodetic.c
>     >
>     > if ( pt.x < -180.0 || pt.y < -90.0 || pt.x > 180.0 || pt.y >
>     90.0 ) return
>     > LW_FALSE;
>     >
>     > It seems kind wierd that it is ok to have a polygon the
>     circumnavigates the
>     > pole, but not a point on the pole?
>
>     It is weird, and I cannot access my last year self to figure out WTF I
>     was thinking doing strict less-than rather than less-than-equals. I
>     think it's just going to have to change.
>
>
> As I read it, that statement only returns false if y > 90.0 or y < 
> -90.0; meaning that a point on the pole (exactly 90.0 or -90.0) would 
> return true. Ergo, the stmt as is permits points on the poles. Am I 
> missing something?
>  
> Bryce
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