[GraphHopper] Load a custom edge weight

[Rossano Schifanella]

Hi there,

suppose I have an external file with this format

OSM_NODE_ID1    OSM_NODE_ID2    w1

where OSM_NODE_ID1 and OSM_NODE_ID2 are two OSM node ids and w1 is a 
double that represents a custom weight. What I'd like to do is:

1) Find the edge gh_edge_id in the GraphHopper internal data structure 
that corresponds to the the edge OSM_NODE_ID1->OSM_NODE_ID2

2) Create a data structure that maps the relation

gh_edge_id    w1

in a way that at runtime in a custom Weighting class I can retrieve the 
value w1 when the corresponding edge is visited.

Which is the best approach to tackle this problem?

Thanks a lot for your support.

Rossano