I am trying to extract an elevation profile across a large dataset. I am working with a 1km DEM of the entire US. The profile crosses the entire country from Washington, DC, over the Appalachians to Pittsburgh, then down the Ohio River to the Mississippi, then up the Mississippi to the Missouri. It then goes up the Missouri River to it's source, over the Rocky Mountains, and eventually down the Columbia River to the Pacific Ocean. Sound familiar? It should - it is the path of the Corps of Discovery, lead by Meriwether Lewis and William Clark to explore an all water route to the Pacific Ocean, while exploring the newly acquired Louisiana Territory.
The reason I explained all that is, since the route is not one or two line segments, but a rather detailed path with LOTS - and I mean 1000s - of vertices. I obviously can't use ER Mapper's "transect" tool. Does anyone have any strategies they have used or can suggest that would allow me to construct an elevation profile of this path? I tried converting my vector layer (of the path) to raster, but then I don't know how to arrange the cells to construct the profile. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Christopher Ferro GIS/Remote Sensing Specialist Center for Educational Technologies Wheeling Jesuit University Wheeling, WV 26003 Phone: 304-243-4326 Fax: 304-243-2497 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Ezekiel 18:20 ----------------------------------------------------------- To make changes to your subscription, please visit our website, http://www.ermapper.com/technicl/ermapperl/index.htm
