1

I downloaded a DEM file (package, rather?) of the entire US from usgs.gov. It's 30GB and contains quite a few files.

Is it possible to import this to QGIS to overlay the data on my map?

enter image description here

1

You have an Esri grid (also known as an Arc/INFO binary grid) format raster. The Esri grid (and other ancient Arc/INFO formats such as the coverage vector format) is a directory of related files stored in a parent directory (workspace) with an INFO database directory.

enter image description here

Qgis can read ESRI grids, just unzip and add the aspect/hdr.adf file.

Note: It looks like (just based on the name) that you downloaded an aspect raster, not a DEM. Aspect is derived from a DEM but doesn't contain any elevation values and you can't reverse the aspect calculation to derive elevation.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.