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 Post subject: Adding elevation to the maps
PostPosted: 27 Nov 2016, 17:16 
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Joined: 30 Apr 2015, 16:33
Posts: 31
I often travel on the logging roads in the back country and it is important to know specific elevation for me, so I am wondering if there is a good and easy to follow write-up anywhere on adding elevation to the OpenStreetMaps used with Navit.
Can anyone please point me in the right direction?

If it matters, I am using the maps generated from Open Street Maps for Ontario,Canada.


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 Post subject: Re: Adding elevation to the maps
PostPosted: 31 Dec 2016, 17:00 
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Joined: 10 Aug 2014, 16:04
Posts: 14
Hi,

The path to add elevation is collect SRTM data, convert to OSM using strm2osm and then let maptool turn it into a seperate navit map.
A bit of info here :
http://wiki.openstreetmap.org/wiki/Srtm2Osm

Navit will show heightlines on the map and sice a while you can also have some rudimentary heightprofile of a route in gui Internal
Image
For this the name of the map with heightlines must be something.heightlines.bin
(you can replace something with anything)
regards.


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 Post subject: Re: Adding elevation to the maps
PostPosted: 31 Dec 2016, 17:10 
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Joined: 10 Aug 2014, 16:04
Posts: 14
And a view of the map with heightlines.
If you zoom in then labels show the altitude of the lines.

Image


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 Post subject: Re: Adding elevation to the maps
PostPosted: 17 Jan 2017, 01:00 
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Joined: 30 Apr 2015, 16:33
Posts: 31
Tried this tool under Fedora 19 with mono and it crashed soon after starting, downloaded a handful of files only.
Guess I will have to find a Windows machine to try.


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 Post subject: Re: Adding elevation to the maps
PostPosted: 17 Jan 2017, 18:14 
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Joined: 30 Apr 2015, 16:33
Posts: 31
Here's what I did on a Win 7 machine:
Tried downloading a map of Southern Ontario with portions of Quebec, upstate New York and some Michigan.
This did not work on a machine with 8 GB RAM as it ran out of memory at the very end of the process.

Then I moved to a machine with 16 GB RAM and it downloaded a 2650 MB file.

Tried to feed this file into maptool, but it died after allocating 112 MB RAM. Tried a handful of earlier versions as well and all crashed.

Then I downloaded smaller areas in Ontario, starting from 11 MB and up to 65 MB.
maptool crashed on all of them sooner or later, with the smallest 11 MB file getting much further according to the screen output.

So I have a bunch of OSM files which I do not know how to use with Navit.


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 Post subject: Re: Adding elevation to the maps
PostPosted: 29 Jan 2017, 13:59 
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Joined: 30 Apr 2015, 16:33
Posts: 31
Any tips on how to use maptool to convert elevations to a map without it crashing?


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 Post subject: Re: Adding elevation to the maps
PostPosted: 01 Jun 2017, 19:27 
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Joined: 26 Sep 2016, 18:30
Posts: 2
I sucessfully generated a heightline map with strm2osm under debian

Best regards,
zintor


Attachments:
heightline.PNG
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