[edit]The tanaka package, released after this post, facilitates the creation of such maps[/edit].

The following post, Tanaka method or how to make shaded contour lines on LandscapeArchaeology.org blog, explains clearly and thoroughly what shaded contour lines are and how to draw them with QGIS.
How hard would it be to implement this method with R?

Continuer la lecture de Shaded contour lines or Tanaka method with R →