[postgis-users] Geometry precision

[Nicolas Ribot]

SnapToGrid ?

On 10/15/07, Paul Moen <pmoen at nd.gov> wrote:
>
>  Is there any way to set a level of precision in postgis?
>
>  I have one wkt defined as,
>  POINT(23456.123456 987654.123456)
>
>  I have another wkt defined as,
>  POINT(23456.123461 987654.123500)
>
>  The units are feet.  Is there any way to get postgis to treat these points
> as equal since the distance between the points is less than .00005 feet.  If
> these points do not equal intersections between adjacent polygons will give
> polygon slivers instead of a linestring.
>
>  I realize that the functions are returning the actual results, I am just
> wondering if there is a way to store the information in the geometrys as a
> set precision and get back the geometry as a wkt with points having that
> same precision, ie 1000ths of feet.
>
>  Thanks,
>
>  Paul Moen
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