I was trying to create a map of Taiwan including DEM data and elevation contour lines. The DEM part was easy. But strangely, I cannot get elevation contourlines. I downloaded hgt data from Viewfinder Panoramas, and placed them into the cache directory of srtm2osm. I called srtm2osm in a batch file: SET SRTM="C:\Program Files (x86)\OpenStreetMap\Srtm2Osm\Srtm2Osm.exe" SET OUTPUTDIR=E:\Maps\Raw\Taiwan.DEM\ %SRTM% -bounds1 21.81 120 23.6 122.1 -o %OUTPUTDIR%TaiwanS.osm %SRTM% -bounds1 23.59 120 25.4 122.1 -o %OUTPUTDIR%TaiwanN.osm TaiwanS mearures 1554993 kB, TaiwanN 2249418 kB (I must do it in 2 parts, otherwise the program uses more than 7 GB of RAM and causes lots of paging). Next, I sorted one of the files with osmosis (originally I sorted and merged both of them, and then merged with an extract from Geofabrik; that's what I plan to do when I got things working...): SET OSMOSIS="C:\Program Files (x86)\OpenStreetMap\osmosis-0.46\bin\osmosis.bat" SET INPUTDIR=E:\Maps\Raw\Taiwan.DEM\ %OSMOSIS% --read-xml %INPUTDIR%TaiwanS.osm --sort --write-pbf %INPUTDIR%Taiwan_Ele.osm.pbf The output file measures 16670 kB. Next, I split it with SET JAVA="C:\Program Files\Java\jre1.8.0_121\bin\java.exe" SET SPLITTER="C:\Program Files (x86)\OpenStreetMap\splitter-r590\splitter.jar" SET INPUTDIR=E:\Maps\Raw\Taiwan.DEM\ SET INPUTDATA=Taiwan_Ele.osm.pbf SET NAME="BernieMap Bike Taiwan" %JAVA% -Xmx6G -jar %SPLITTER% ^ %INPUTDIR%\%INPUTDATA% ^ --description=%NAME% ^ --max-nodes=2500000 ^ --no-trim ^ --mapid=47120001 ^ --max-threads=4 ^ --keep-complete=true which creates 3 pbf-files. Finally, I build the map with SET JAVA="C:\Program Files\Java\jre1.8.0_121\bin\java.exe" SET MKGMAP="C:\Program Files (x86)\OpenStreetMap\mkgmap-r4107\mkgmap.jar" SET PREPROC=E:\Data\Projects\Projects.Net2\StylePreProcessor\bin\Debug\StylePreProcessor.exe SET STYLE=E:\Maps\Development\Style.Mapnik\Mapnik.Bike SET DEMPATH=E:\Maps\Raw\Taiwan.DEM SET NAME="BernieMap Bike Taiwan" SET TYP=M04712.TYP %PREPROC% /in=E:\Maps\Development\Style.Mapnik\Mapnik.Base /out=%STYLE% /defines=BIKE,THAI copy E:\Maps\Development\Style.Mapnik\%TYP% %TYP% copy "C:\Program Files (x86)\OpenStreetMap\GMT\gmt.exe" gmt.exe gmt.exe -wy 4712 %TYP% %JAVA% -Xmx6G -ea -jar %MKGMAP% ^ --style-file=%STYLE% ^ --family-name=BernieMapTaiwan ^ --family-id=04712 ^ --product-id=1 ^ --description=%NAME% ^ --series-name=%NAME% ^ --name-tag-list=name:en,int_name,name ^ --latin1 ^ --add-pois-to-areas ^ --route ^ --location-autofill=bounds,nearest ^ --preserve-element-order ^ --draw-priority=25 ^ --index ^ --nsis ^ --show-profiles=1 ^ --generate-sea=multipolygon,extend-sea-sectors,floodblocker ^ --max-jobs=4 ^ --dem-poly=areas.poly ^ --x-dem=%DEMPATH% ^ --x-dem-dists=3314,4000,6000,8000,10000,15000,20000,30000 ^ --gmapsupp 4*.osm.pbf ^ %TYP% move gmapsupp.img E:\Maps\Use\Taiwan.IMG which creates an IMG file of 18798 kB. It is recognized by my Oregon 600. In the demo mode, I navigate to a waypoint (Luigui, 22.99573 N, 120.63496 E). I expect to see a map of contourlines only. But I get a completely white map. Elevation from DEM is 250m directly adjacent to the waypoint, and other sensible values nearby. The style file contains: contour=elevation & contour_ext=elevation_major & (ele > 0 | ele < 0) { name '${ele|conv:m=>ft}'; } [0x20 level 4] contour=elevation & contour_ext=elevation_medium & (ele > 0 | ele < 0) { name '${ele|conv:m=>ft}'; } [0x21 level 2] contour=elevation & contour_ext=elevation_minor & (ele > 0 | ele < 0) { name '${ele|conv:m=>ft}'; } [0x22 level 0] The TYP file (created and compiled with MapTk) contains: [Polyline] Type=0x20 String=0,Höhenlinie String=4,Elevation Color=0,0x000000 Line=00..00 [END] [Polyline] Type=0x21 String=0,Höhenlinie String=4,Elevation Linewidth=1 Color=0,0x000000 [END] [Polyline] Type=0x22 String=0,Höhenlinie String=4,Elevation Linewidth=2 Color=0,0x000000 [END] which should cause black elevation contour lines. What do I do wrong? Thanks a lot for your hints. Kind regards, Bernhard