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

[Fred Lehodey]

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

Fred.


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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