[postgis-users] Obtaining the intersection

[Álvaro Gutiérrez]

Álvaro Gutiérrez escribió:
> Hi everyone. I'm new at this list and with PostGIS. My english isn't 
> very good, sorry.
> I have to two multilinestrings that are almost perpendicular, but they 
> don't intersect. What i want is to enlarge one of them so it 
> intersects with the other one, and then obtaining the intersection 
> point, and splitting the line with the intersection in two from that 
> intercection point.
>
>    Line to split:
>         MULTILINESTRING ((439889.59 4474591.929, 439976.17 4474582.01))
>
>    Line wich should intersect whith it:
>         MULTILINESTRING ((439923.24 4474588.07, 439924.28 4474546.04, 
> 439932.48 4474500, 439937.73 4474470.48))
>
>    Distance between them, they are almost touching:
>          0.0038770415180001817
>
> Thanks for your help. And sorry again for my english:
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>
isn't there anybody that has any clue about this?. Thanks