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[mkgmap-dev] undocumented contour line feature

From Gerd Petermann GPetermann_muenchen at hotmail.com on Fri Mar 24 21:32:26 GMT 2017

Hi Steve,

only class GeoTiffDEM is optional, the active code is able to read *.hgt files and can
produce ways with elevation data. I stumbled over it because it appears in
MapperBasedMapDataSource.addBackground() which I plan to move to
MapDetails so that we don't have to override it in many sources.

I like the idea that mkgmap adds SRTM data "on the fly" instead of first creating huge OSM
files, pass them through splitter and so on. No idea how much work would be needed to
make the code work and how many poblems that would cause, esp. if we also try to
download SRTM files automatically.


Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Steve Ratcliffe <steve at parabola.me.uk>
Gesendet: Freitag, 24. März 2017 22:05:26
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] undocumented contour line feature


> mkgmap contains sources to generate contour lines from SRTM data, but it seems to be very
> incomplete. The last significant changes in the source was in 2010, and I never heard that anybody uses
> options like --x-contours since I started to contribute to mkgmap.

All classes in packages named "optional" are not included in the
download distribution.  So it has never been available except if you
compile the source yourself and include it.


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