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I've been working on a routing app for the last few months and it's near completion now. The final feature I want to add is elevation. So when when running/cycling through a path, I would also wanna add the elevation data, so I know SRTM provides elevation data..but I don't know the best way to merge this with the osm xml file I'm using.

asked 17 Apr '15, 16:32

echoalphapapa's gravatar image

accept rate: 0%

edited 17 Apr '15, 17:05

aseerel4c26's gravatar image

aseerel4c26 ♦

See this recently published solution for using elevation data in routing (based on OSRM, but I'm sure it could be relevant to other routing apps):

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answered 19 Apr '15, 16:07

Richard's gravatar image

Richard ♦
accept rate: 18%

your "add the elevation data" is not very specific on what you want to do.

Let me try a first help (although I never did anything similar):

AFAIK SRTM is more or less a big bitmap with the heights, so really merging this with the OSM XML is not possible (except for contour lines in a map making process). You would need to merge them in a later processing step.

You might want to have a look at other open source routing applications. E.g. graphhopper (demo) - uses the elevation data for routing (i.e. avoiding or targeting mountains). See this very recent blog post: Elevation data and OpenStreetMap (by karussell).

Also see

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answered 17 Apr '15, 17:14

aseerel4c26's gravatar image

aseerel4c26 ♦
accept rate: 18%

edited 27 Apr '15, 22:13


I can confirm that graphhopper uses elevation for routing e.g. for the bike profile it tries to avoid hills. And there is a simple config change to enable elevation, either via SRTM or the enhanced CGIAR data

(18 Apr '15, 09:47) peatar

@peatar: thanks! I have fixed it in my text and also linked the recent blog post about this.

(27 Apr '15, 22:14) aseerel4c26 ♦

Thanks :) !

(30 Apr '15, 21:23) peatar

Also you can use APIs to get elevation by lot/lat for example from Google elevation API or this one

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answered 01 Aug '16, 09:42

Gaploid's gravatar image

accept rate: 0%

edited 01 Aug '16, 09:43


No, you cannot use Google APIs and merge with OSM data due to OSM&Google licensing

(01 Aug '16, 10:13) peatar

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question asked: 17 Apr '15, 16:32

question was seen: 7,915 times

last updated: 01 Aug '16, 10:13

NOTICE: is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum