Hello Frédéric,
Thanks a lot it works well now to generate the contour map file. I now have one .img file with the srtm data (343.1 mo) and one .img file wih the map of france (42.2 mo). But when I try to combine them with the --gmapsupp option, the size of the resulting file is only 358.9 mo and it doesn't display anything on my vista cx screnn while the 2 original maps (srtm and osm for france) display fine. Any idea ? I can share the files if needed.
I only started using contours yesterday so I am no expert but it works for me - my etrex vista can display the contours and, also, you can enable/disable the contours on the gps's map setup screen. I use the shell script below to generate my .img file (obviously, your names and map numbers will vary). Notice that I give the transparent and draw-priority options when making the contour .img. I hope this is useful, Mark --------------------- #!/bin/sh USE_CONTOURS=1 set -x java -enableassertions -jar ~/OSM/mkgmap.jar \ --code-page=1252 \ --country-name="UNITED KINGDOM" --country-abbr=GBR \ --description="Around Malpas" \ --family-name="Burto Maps" \ --ignore-osm-bounds \ --latin1 \ --net \ --product-id=6324 \ --style-file=mkgmap-burto-style \ --road-name-pois \ local-area.osm IMGFILES=63240001.img if [ $USE_CONTOURS -ne 0 ]; then java -enableassertions -jar ~/OSM/mkgmap.jar \ --code-page=1252 \ --description="Contours" \ --family-name="Burto Maps" \ --ignore-osm-bounds \ --latin1 \ --style-file=mkgmap-burto-style \ --transparent \ --draw-priority=30 \ 50000000.osm.gz IMGFILES="$IMGFILES 50000000.img" fi java -enableassertions -jar ~/OSM/mkgmap.jar \ --code-page=1252 \ --description="Around Malpas" \ --family-name="Burto Maps" \ --latin1 \ --tdbfile \ --tdb-v4 \ --gmapsupp \ $IMGFILES