Thanks, seems to be a good idea, but I need some routing on geo position data, but also some graph algorithm depends on machine learning structures, if I can use the pgRouting project to deal with a „feature graph“ and geo-partial data this will be great, I will test it
Thanks for this hint Am 19.04.2018 um 18:42 schrieb Fabrízio de Royes Mello <fabri...@timbira.com.br<mailto:fabri...@timbira.com.br>>: Em qui, 19 de abr de 2018 às 11:54, Philipp Kraus <philipp.kr...@tu-clausthal.de<mailto:philipp.kr...@tu-clausthal.de>> escreveu: Hello, I’m using in a project Postgresql and PostGIS for a geospatial data model, but now I need also a graph in this structure, so my question is, is there any existing extension for Postgres to build a graph. I found ltree but this is for tree structures only, not for graphs. In general I have different undirected weighted graphs. So I need some routing algorithms based on the graph weights, distance calculation between nodes. My first idea was to use a graph database e.g neo4j, but I have got a limitation, that the whole system should be designed in Postgres. Did you can give some ideas to build a graph within Postgres Do you already check the pgrouting [1] project? Regards, [1] http://pgrouting.org/ -- Fabrízio de Royes Mello Timbira - http://www.timbira.com.br/ PostgreSQL: Consultoria, Desenvolvimento, Suporte 24x7 e Treinamento
