Hi Carsten
Many thanks....the link you mention shows the route instructions describe each
street and gives the position of the start point, its length, and time in
seconds.
This is very helpful.
Still the documentation is not fully clear (to me).
Take the example in the link:
["Turn left", "High Street", 200, <------ 200 m long
4, <------ position (of the starting point on the
street?)
10, <------- time to traverse this street?
"200m", "NE", 22.5 ]
My questions are:
1. What is the lat/long of the starting position on High Street i.e how to
convert "4" to lat/long.
I think this has to do with via indices and via points in the link you
mention, but that seems a bit murky (at least to me). Any clarification would
help a lot. What is the difference between via_indices and via_points. Is
there a via_point for each point in the route instruction? Can I just use one
or the other?
2. After say 5 seconds of travel on High Street, what would be the lat/long of
the new position.
ThanksSriram
From: Carsten Malchow <[email protected]>
To: [email protected]
Sent: Wednesday, December 3, 2014 10:43 AM
Subject: Re: [OSRM-talk] Plotting position in time using OSRM
Hi Sriram to reply a part of your question:take a look at this documentacion
[1]The first number is driving directions.The geomerty is a compressed tring
that you have to decompress.also discripted in the Link below. Kind regards
Carsten [1]
https://github.com/Project-OSRM/osrm-backend/wiki/Output-jsonGesendet:
Mittwoch, 03. Dezember 2014 um 09:58 Uhr
Von: "S R" <[email protected]>
An: "[email protected]" <[email protected]>
Betreff: [OSRM-talk] Plotting position in time using OSRM
I would like to create a simple simulation of a trip using OSRM. I believe the
steps would be as follows (my questions are in parenthesis below) a. Load OSM
map of a city into OSRMb. Choose a random begin, end location that falls within
the city lat/long (how to find lat/long limits of the loaded map?)c. Compute
the distance (in time) between start, end using OSRMd. Also compute a path
between start, end using OSRM (are the node vertices mentioned in route the
same as in the OSM map?)e. The difficult part: -- start the simulation by
displaying the map along with position marker (Leaflet?) -- As time
progresses, determine the location along the OSRM route computed above (how can
this be done?) and adjust the position marker. An OSRM route looks like
this:"route_instructions": [
[
"10", <-------------------- what is this id and how to convert
it to lat/long
"Schulstraße",
126,
0,
18,
"126m",
"SE",
116
],
[
"7", <---------------- how to find elapsed time to this point
from previous one
"Am Rahmtor",
57,
2,
11,
"57m",
"NE",
38
]
Given a start and end lat/long, a network distance (time) can be obtained as
follows:
"distance_table": [
[
0,
26084
],
[
26084,
0
]
This would be useful if the route way-points above could be converted into time
units.
Would appreciate any help with the above
questions,Sriram_______________________________________________ OSRM-talk
mailing list [email protected]
https://lists.openstreetmap.org/listinfo/osrm-talk
_______________________________________________
OSRM-talk mailing list
[email protected]
https://lists.openstreetmap.org/listinfo/osrm-talk
_______________________________________________
OSRM-talk mailing list
[email protected]
https://lists.openstreetmap.org/listinfo/osrm-talk
