Since TINs are more complicated to deal with, simpler relief shading programs generally use grids instead of TINs.
For relief shading, the most important characteristics are two angles: aspect and slope.
Analytical relief shading
is used in most cases, but although several authors describe the advantages of sophisticated visualisation (Devereux et al.
Considered the founder of modern academic cartography, Imhof (1895-1986) taught at the Swiss Federal Institute of Technology in Zurich from 1925 to 1965, and is best known for his relief shading
work and mountain cartography.
By analyzing data in a grid format, users can easily view constantly changing data variables in relation to location by thematically mapping the data with color or relief shading
, or by layering and comparing the data mathematically with other grid themes to determine unique or hidden relationships.
in low-angle sunlight with the benefit of the stereoscope was the main source of mapping data.
Gilman used the resulting illuminated contours as an intermediate step in his semi-automated relief shading