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altitude data?altitude data?Posted Mar 7, 2009 0:34 UTC (Sat) by peterh (subscriber, #4225)In reply to: altitude data? by roskegg Parent article: OpenStreetMap: the data behind the maps
The USGS has free Digital Elevation Model (DEM) data for the US, down to 1/3 arc second (~10m
IIRC); they may have some global data up there as well (shuttle radar SRTM data is global with a 3 arc second (~90m) resolution IIRC). Google will find you want you want.
Anyone want to start OpenTopographicMaps? :-)
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altitude data? Posted Mar 7, 2009 0:41 UTC (Sat) by flewellyn (subscriber, #5047) [Link]
Wonder if they have LIDAR data too? That'd be really useful.
altitude data? Posted Mar 7, 2009 13:24 UTC (Sat) by dnewcomb (subscriber, #3312) [Link]
Lidar data for the US, where it is available, can be downloaded from the USGS Click site, http://lidar.cr.usgs.gov/. Be advised, that if you are interested in downloading the point source data, it is a lot of data.
altitude data? Posted Mar 7, 2009 1:29 UTC (Sat) by roskegg (subscriber, #105) [Link]
Thank you, Peter.
altitude data? Posted Mar 7, 2009 12:11 UTC (Sat) by Burgundavia (guest, #25172) [Link]
OpenCycleMap and OpenPisteMap both use STRM (Shuttle radar imagery), but it has some major issues, such as blank spots and obviously wrong stuff.
altitude data? Posted Mar 7, 2009 12:11 UTC (Sat) by jhellan (subscriber, #17103) [Link]
The SRTM data doesn't cover latitudes above 60 degrees.
http://www.viewfinderpanoramas.org/ covers a lot of what SRTM left out.
altitude data? Posted Mar 12, 2009 3:02 UTC (Thu) by puetzk (guest, #3318) [Link]
SRTM data is easily combined with OSM layers to make topographic contour maps:
http://wiki.openstreetmap.org/wiki/Srtm2Osm
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