[talk-au] Introduction Brett Russell (Ent)

John Henderson snowgum at gmx.com
Wed Jul 18 21:43:47 BST 2012

On 18/07/12 18:45, Brett Russell wrote:

> I have been playing with the IMG file for Tasmania from OSM website,
>  both routable and standard and like what I see but they are
> optimised for vehicles with foot tracks not showing unto at the 300
> metre scale is zoomed to.  As do mountains.  This means you are
> navigating at the micro level when these features should be at the
> macro level.  Huts is another item that needs to show up on macro
> level.

Have you managed to get a gmapsupp.img Garmin file out of mkgmap yet?

If and when you do, try editing the "points" file entry for
"natural=peak", and change the resolution value in that entry to (say)
16.  Then make a new gmapsupp.img and see how your mountains display at
different zoom levels then.

For walking tracks, try a similar change to the "lines" file for

If you want to do more significant changes (say making walking tracks
show as a bold purple line), then you need to use a style file (a "TYP"
file).  I've used this online editor for maintaining mine:


but there may be easier methods available these days.  This is how
cycling maps derived from OSM might make cycle paths show more
prominently than roads.

I'm guessing you've already discovered that you can download your own
custom area of OSM data by clicking on "Export" when viewing the
ordinary OSM map.


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