Hi there,
I'm trying to create an elevation from a line feature similar to what is described here.
I have a GPX file that I have used to create a line feature and I want to create an elevation profile of this line feature. My understanding is that I need a ground elevation surface. Ideally a raster image like a DEM/DTM. Then I use the profile or elevation profile tool to create a relationship between the line feature and this ground elevation surface.
My questions are these:
- where can I get a raster DEM which covers UK, France and Spain for free? I don't need it to be necessarily too detailed as I know these are huge files to save on a personal computer. Any ideas would be greatly appreciated.
- also when it comes to creating the elevation profile, do I use the Profile geoprocessing tool, or some other tool eg exploratory 3D analysis?
Any help is greatly appreciated, many thanks in advance
Katy