On 23/03/2008, David Ebling <[EMAIL PROTECTED]> wrote: > > Hi all, just wondering if anyone can help me - I want > to make a Garmin .IMG file of the whole of cumbria > that includes NASA SRTM data, as the IMG files from > here do: http://www.smc.org.uk/ContourMaps.htm but i'd > also like to have OSM road, footpath, cycle path etc > data on there too. The Garmin unit i'm trying to use > it on is a 60Csx, which doesn't seem able to display > more than one map for an area at a time, so i'm not > able to have the SRTM data in one map file and the > OSM/MapSource data in another, and show both at once.
I am a bit surprised you can only show one map at a time, but I have an etrex and their capabilities may vary. I could simply be that both maps you are trying to show are non-transparent. While OSM has its own map compiler I have always used cgpsmapper ( www.cgpsmapper.com) which uses an input format known as the 'Polish' or mp format. Anyway, technically you can use GPSMapEdit to extract the map data from the SMC file into 'Polish format' and there are some older programs on the OSM site on how to transform the OSM format into the Polish format as well. You can then simply provide a combined input file for both raw data formats and recompile the data into a single map. There is also a program called gmaptool (difficult to find: http://www.anpo.republika.pl/download.html#gmaptool) which has a simple join facility, but it might not work if you are dealing with overlapping maps (the main purpose is to combine non-overlapping maps for use with some of the newer Garmins which only allow a single image to be present). HTH Ludwig
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