Dear Marko, I already wrote a class to read SRTM data directly with mkgmap, i.e. without having to create the contours as separate (huge) files. Since I'm still testing it and I have to add some configuration stuff (path of directory containing data, distance between contour lines etc.), I have not posted it yet. It can already read the .hgt-format and the CGIAR GeoTIFFs (the latter requires java image io to be installed). Since the ASTER files come as GeoTIFFs, I think it will be easy for me to read them (I will only have to adjust the tile size from 5x5 degrees to 1x1). Best wishes Christian Marko Mäkelä schrieb:
I came across this via Slashdot:
http://asterweb.jpl.nasa.gov/ http://www.nasa.gov/home/hqnews/2009/jun/HQ_09-150_ASTER_Topographic_Map.htm...
Quoting the press release above:
"Previously, the most complete topographic set of data publicly available was from NASA's Shuttle Radar Topography Mission. That mission mapped 80 percent of Earth's landmass, between 60 degrees north latitude and 57 degrees south. The new ASTER data expands coverage to 99 percent, from 83 degrees north latitude and 83 degrees south. Each elevation measurement point in the new data is 98 feet apart."
This is good news for us North Europeans. The north limit of the SRTM is a few hundred meters north from my home, about 30 km north from the Helsinki coast.
Can anyone who knows the topography business take a look at this data and write scripts for translating ASTER elevation data and OSM with mkgmap? At the end of the above press release, there are a few links that ought to be useful for us:
For visualizations of the new ASTER topographic data, visit: http://www.nasa.gov/topics/earth/features/20090629.html
Data users can download the ASTER global digital elevation model at: https://wist.echo.nasa.gov/~wist/api/imswelcome and http://www.gdem.aster.ersdac.or.jp
Best regards,
Marko _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev