[postgis-users] postgis function

[Uwe Seher]

Am 03.05.2007, 14:22 Uhr, schrieb Valtz Com <valtz_com at hotmail.com>:

> Hi all,
> can someone give me a hint for one problem...
>
> i have a linestring. it has start point coordinates, end point  
> coordinates and of course length and each point has (x,y) coordinates  
> pair. these x,y coordinates are stored in a separete table for every  
> start and end point respectively . let suppose that length of linestring  
> is 500 meter. i am at 300 meter away from end point of line string. i  
> want to get my position in (x,y) coordinates on this line string. any  
> hint......
>
> thx
> ValtZ

Hi

At the moment i am not sure if and how it works with M-type geometries,  
but you can draw a circle around your startingpoint with the distance as  
radius and intersect it with the line.

bye uwe
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