[postgis-users] neeed help in postgis

[Stephen Woodbridge]

Hi Beekk,

I can't offer help with the postgis topology, but in pgrouting we do 
this with a zlevel attribute at each node. So the water might have 
zlevel=1, the bridge would have zlevel=2 and if you had a tunnel going 
under the river it might have zlevel=0. Then when we build our topology 
for routing (NOT the same thing as postgis topology), we use the zlevel 
to separate nodes at different levels.

I'm not sure if postgis topology has a similar mechanism.

-Steve

On 12/13/2014 9:45 AM, Beekk Meess wrote:
> hello, i m very happy to your request, thank your very much, but i
> want to use the topology but there is a lot of instructions like
> ST_AddEdgeModFace and when i add an edge for example, all  topology
> relations are changing by adding an edge. i want to adding an edge
> and controlling the changint of topology. i mean i want to make more
> then one network edges or faces topology in the same topologic
> schema. in reality for example if i have a bridge above an road.
> edges representing way in the under level make a topology and edges
> connecting with the bridge making other network topology but all
> these edges in the same table. i'm sorry for my bad english again.
> -------------------------------------------- En date de : Sam
> 13.12.14, Sandro Santilli <strk at keybit.net> a écrit :
>
> Objet: Re: neeed help in postgis À: "Beekk Meess"
> <marabaut at yahoo.fr> Date: Samedi 13 décembre 2014, 14h27
>
> On Sat, Dec 13, 2014 at 03:00:07AM +0000, Beekk Meess wrote:
>>
> hello, i m very happy to your request, thank your very much
>> but i want to use the topology but
> there is a lot of instructions like ST_AddEdgeModFace [...]
>
> But you're still writing to me privately, while I asked you to use
> the mailing list :)
>
> --strk;
>
> () ASCII ribbon campaign  --  Keep it simple ! /\
> http://strk.keybit.net/rants/ascii_mails.txt
>
>
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