Developer documentation / flight manual

i am looking for any documentation on the graphhopper library and not the routing API. What are the fundamental objects, how can I specify the routing, what are the “contraction hierarchies” and so on.

I found this page but it doesn’t look very official to me:

Is there a “flight manual” that explains the concepts that are implemented in the library?

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I have assigned a different category to your topic: our open source routing engine. You can find it and its documentation here:

i have seen the github page but that doesn’t tell me how to use the graphhopper as a library. I was thinking about a description, a tutorial, a documentation of how to instantiate GH objects in a java project, change routing types, change weights and so on.

See and

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