{"id":35559,"date":"2018-04-17T17:18:11","date_gmt":"2018-04-17T15:18:11","guid":{"rendered":"https:\/\/openmtbmap.org\/?page_id=35559"},"modified":"2025-10-24T10:43:11","modified_gmt":"2025-10-24T08:43:11","slug":"dem-relief-shading","status":"publish","type":"page","link":"https:\/\/openmtbmap.org\/download\/dem-relief-shading\/","title":{"rendered":"Premium DEM Relief Shading Maps for Garmin GPS devices"},"content":{"rendered":"

<\/p>\n\n

<\/p>\n

About the DEM Relief Maps<\/h3>\n

If you want to enable relief shading \/ shaded maps on your GPS device from 5km zoom level or higher - I provide here for OpenMTBMap members downloadable .img files for each country or continent.<\/p>\n

I worked quite some time to optimise the speed\/quality of the rendering on the devices - however note it will slow down map panning on your device.\u00a0<\/p>\n

In General you can simply use the continent .img files - only for Asia it is pretty big (and has a lot of tiles - so make sure to not go over the 2048\/4096 tile limit on your device).<\/p>\n

I've added the files for each country as well for those who just want to try it out or prefer very small download.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

Screenshots from DEM on Oregon 600 - only Austria in this example. From Left: 3km scale (DEM not shown with Auto mode), 5km, 8km and 30km.<\/p>\n

 <\/p>\n

How to Use<\/h3>\n

Right now this is first version - it should work but I hope to still improve them a bit. To use them simply copy the .img file to the \/garmin directory on your mSD card, then activate the mtbmap-DEM-XX (XX standing for abbreviated country) map on your device.<\/p>\n

Attention in night mode the relief will never be shown. So if you try it out at night (or without GPS reception sometimes)\u00a0 - you need to deactive the night mode.<\/p>\n

 <\/p>\n

Device Setup<\/h3>\n

You should setup your device to show DEM to auto mode. You can do this in\u00a0<\/p>\n

Map Settings --> Advanced Setup -->Shaded Relief: Auto<\/p>\n

 <\/p>\n

If shaded Relief is set to Auto - it will show from 5km zoomed out to infinite (I hope to restrict this in future to 30 or 50km). Always make sure to have the devices Basemap active - it will really speed up map panning when zoomed out a bit.<\/p>\n

 <\/p>\n

3 Different Versions<\/h3>\n

I have only properly tested the first - standard Version - which is also the one I recommend to use. If you however want to try out a DEM shaded relief map for your device with higher detail level \/ better resolution you can try out the Experimental versions. They are available in Higher Detail, and in Highest Detail.<\/p>\n

Note you should only send one version to your GPS device at a time from a single country. Else your device may not boot. However for testing you can e.g. use the Standard Europe DEM Overview map, and the Higher Detail DEM map from a single country like Germany or Alps.<\/p>\n

Note also that the Higher Detail, and Highest Detail experimental versions have not been tested thoroughly - and they mainly make sense if you set\u00a0Map Settings --> Advanced Setup -->Shaded Relief: Show Always.<\/p>\n

 <\/p>\n

 <\/p>\n

If you want to know the last update time, MD5 Checksum or exact filesize of a download - just look into the MD5 link that follows each download.\u00a0<\/p>\n

 <\/p>\n

Contourlines\/DEM data:<\/strong><\/p>\n

The altitude data for the contourlines is from varying sources in the following priority (if available):<\/p>\n

    \n
  1. LIDAR data from open government data and other openly available sources - collected and converted to hgt format by\u00a0- Sonny - https:\/\/sonny.4lima.de<\/a> This data is very very high quality and resolution - there is no better open data available according to my knowledge.<\/li>\n
  2. ALOS World 3D30<\/a>\u00a0- \u00fcberall zwischen N60\u00b0 und S60\u00b0<\/li>\n
  3. SRTM 1\" v3.0 - very rarely for some tiles missing in ALOS data - also only between N60\u00b0 and S60\u00b0.<\/li>\n
  4. Viewfinderpanormas<\/a> 1\" - then 3\" - above N60\u00b0 \/ below S60\u00b0 as there is no SRTM data nor ALOS or LIDAR Data avialble.<\/li>\n
  5. SRTM v3.0 by NASA<\/a> 3\" v3.0 (very very rarely, 8 tiles only)<\/li>\n<\/ol>\n

    more exact info which data is used where - inside the copyright.txt files.<\/p>\n

     <\/p>\n

    Free Sample download of Austria if you have no OpenMTBMap membership:<\/strong><\/p>\n