Are instruction intervals homogeneous?

[leevilux]

I would like to compute an arrival time for every point of a routing API response. The problem is that the distance and time properties of an instruction are assigned to several points of the interval. Hence, I would like to know if the points that belong to an interval are homogeneous in the sense that the chosen vehicle will have constant speed along them? In that case I could interpolate linearly to get ETAs.

I am referring to

• paths[0].instructions[0].time
• paths[0].instructions[0].interval
• paths[0].points.

[karussell]

You can use the path details “distance” and “time”:

• https://github.com/graphhopper/graphhopper/blob/0.11/core/src/main/java/com/graphhopper/util/details/TimeDetails.java
• https://github.com/graphhopper/graphhopper/blob/0.11/core/src/main/java/com/graphhopper/util/details/DistanceDetails.java