What is the difference between pgr_createtopology and pgr_createverticestable?Why does Driving distance of...
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What is the difference between pgr_createtopology and pgr_createverticestable?
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I'm using pgRouting and I'm going through the manual (Release 2.1.0) and in chapter five, it says:
• pgr_createTopology - to create a topology based on the geometry.
• pgr_createVerticesTable - to reconstruct the vertices table based on the source and target information.
When I run them, I get the exact same outputs. Both pgr_createtopology and pgr_createverticestable give me a new layer public.network_vertices_pgr with:
id|cnt|chk|ein|eou|the_geom
As far as I can tell the two functions are doing the exact same thing, and it would be redundant to run both of them, I just wanted to see if there is a difference that I'm overlooking.
postgresql pgrouting
asked 20 mins ago
Renée PoitrasRenée Poitras
63
add a comment |
I'm using pgRouting and I'm going through the manual (Release 2.1.0) and in chapter five, it says:
• pgr_createTopology - to create a topology based on the geometry.
• pgr_createVerticesTable - to reconstruct the vertices table based on the source and target information.
When I run them, I get the exact same outputs. Both pgr_createtopology and pgr_createverticestable give me a new layer public.network_vertices_pgr with:
id|cnt|chk|ein|eou|the_geom
As far as I can tell the two functions are doing the exact same thing, and it would be redundant to run both of them, I just wanted to see if there is a difference that I'm overlooking.
postgresql pgrouting
asked 20 mins ago
Renée PoitrasRenée Poitras
63
add a comment |
I'm using pgRouting and I'm going through the manual (Release 2.1.0) and in chapter five, it says:
• pgr_createTopology - to create a topology based on the geometry.
• pgr_createVerticesTable - to reconstruct the vertices table based on the source and target information.
When I run them, I get the exact same outputs. Both pgr_createtopology and pgr_createverticestable give me a new layer public.network_vertices_pgr with:
id|cnt|chk|ein|eou|the_geom
As far as I can tell the two functions are doing the exact same thing, and it would be redundant to run both of them, I just wanted to see if there is a difference that I'm overlooking.
postgresql pgrouting
asked 20 mins ago
Renée PoitrasRenée Poitras
63
I'm using pgRouting and I'm going through the manual (Release 2.1.0) and in chapter five, it says:
• pgr_createTopology - to create a topology based on the geometry.
• pgr_createVerticesTable - to reconstruct the vertices table based on the source and target information.
When I run them, I get the exact same outputs. Both pgr_createtopology and pgr_createverticestable give me a new layer public.network_vertices_pgr with:
id|cnt|chk|ein|eou|the_geom
As far as I can tell the two functions are doing the exact same thing, and it would be redundant to run both of them, I just wanted to see if there is a difference that I'm overlooking.
postgresql pgrouting
postgresql pgrouting
asked 20 mins ago
Renée PoitrasRenée Poitras
63
asked 20 mins ago
Renée PoitrasRenée Poitras
63
asked 20 mins ago
Renée PoitrasRenée Poitras
63
asked 20 mins ago
Renée PoitrasRenée Poitras
63
asked 20 mins ago
Renée PoitrasRenée Poitras
63
63
add a comment |
add a comment |
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