Topo Package 20130304 (adds auto downloads of missing SRTM data)
The Topo Package contains two programs that read digital elevation data and makes STL files for use in CNC applications. Topo makes simple STL's within a 1 degree x 1 degree window; BigTopo is more flexible, and can make STLs that cover larger swaths of the planet. I have no idea of the limits, but I have made maps of Hawaii, New Zealand, and Alaska with no problems. BigTopo also gives you a lot more control over the output file. It takes less than 2 minutes to make the STL file. It will also automatically download the datafiles over the 'net to complete the region you are interested in. I recommend using this package with MeshLab and Google Earth (both are free and well-supported downloads). Each of the Topo programs have detailed PDF manuals.
The elevation data files are available for free download from http://dds.cr.usgs.gov/srtm/version2_1/
In addition to the two STL generators, the Topo Package includes a converter (DEM_2_SRTM) that can take the larger 50 degree x 40 degree DEM files (freely available at same site) and breaks them into smaller chunks for the BigTopo program. There are 30 DEM files for the planet, and each is turned into 2000 tiles by this converter. The auto-downloader code requires the freeware 7za.exe program, which is also in the archive file.
If you like the program, consider making a contribution via PayPal to support Topo! Contributions of $25 or more will receive an unlock key to clear the NagScreen, and will be informed of all updates to the Topo Package
Copy this URL into your browser bar to access the files
https://www.dropbox.com/sh/a0jfvw9pc4fukek/3-_ewRUbDE
The elevation data files are available for free download from http://dds.cr.usgs.gov/srtm/version2_1/
In addition to the two STL generators, the Topo Package includes a converter (DEM_2_SRTM) that can take the larger 50 degree x 40 degree DEM files (freely available at same site) and breaks them into smaller chunks for the BigTopo program. There are 30 DEM files for the planet, and each is turned into 2000 tiles by this converter. The auto-downloader code requires the freeware 7za.exe program, which is also in the archive file.
If you like the program, consider making a contribution via PayPal to support Topo! Contributions of $25 or more will receive an unlock key to clear the NagScreen, and will be informed of all updates to the Topo Package
Copy this URL into your browser bar to access the files
https://www.dropbox.com/sh/a0jfvw9pc4fukek/3-_ewRUbDE