<div dir="ltr"><div style>Hello again,</div><div style><br></div><div style>In section 5 of the Workshop the assign_vertex_id function is used on a MULTILINESTRING column:</div><div><br></div><a href="http://workshop.pgrouting.org/chapters/topology.html#calculate-topology">http://workshop.pgrouting.org/chapters/topology.html#calculate-topology</a><br>
<div><br></div><div style>This function makes use of the st_startpoint function that can only take as input a LINESTRING. I worked around this by creating an extra column in the ways table, but I wonder what can be the usage may be of a network composed by MULTILINESTRING objects. Perhaps it would be better to simply change the data type used in this example.</div>
<div style><br></div><div style>Regards,</div><div style><br></div><div style>Luís</div></div>