[postgis-users] ST_Line_Locate_Point - what is the distance at which a point is NOT close to a line?

Fred Lehodey lehodey at gmail.com
Wed May 19 11:30:35 PDT 2010

Returns zero when the closest point on the linesting is the from node.


On Wed, May 19, 2010 at 7:13 PM, Gokul <gokulj at gmail.com> wrote:

> Hello,
> Newbie question. Please bear with me.
> I understand ST_Line_Locate_Point that returns the " location of the
> closest point on LineString to the given Point as a fraction of the total
> distance of the LineString", but what is the distance between the Point and
> the LineString that it considers as 'close'
> In other words, when does it return zero? (i.e what is the distance at
> which a point is not close to a line?)
> Thanks,
> Gokul.
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