PeteDK wrote:
Hi there
I'am working on a route comparison tool for carpools.
The route comparison is based on 'steps' retrieved from google maps
GDirection. These steps vary in length and i use the coordinates at
the beginning of each "step". However, sometimes the distance of these
steps is too long(ex. driving 30-40 km. on the freeway). Therefore i
would like to calculate/find the coordinate located in between two
given coordinates.
Lets say one step starts at:
56.043185,9.922714
and ends at:
56.234287,9.864521
I would then like to calculate the point right in the middle of these
coordinates.
I use the haversine form to calculate the distance between
coordinates, but im not sure whether or not this can be used for the
same purpose.
http://www.mpi.nl/world/persons/private ... versine.py
I apologize if this thread has been posted the wrong place:)
any help is greatly appreciated!
kind regards.
Pete
For the distances you're talking about, those coordinates are very close
to linear. So to find the midpoint, just average the coordinates. You
might be off by half a km, but roads bend more than that.
DaveA
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