One of the things us old folks used to do with paper maps was trace the data onto mylar or tracing paper, and put it over another map. This analytical feista allowed the comparison of more than one variable. This is known as an "overlay" for obvious reasons.
Simplificaton facilitates overlay
Using complex or continuous variables in an overlay leads to very complex output
For example, try looking for a certain combination of slope and elevation by combining two continuous variables.
but simplification leads to fewer resulting combinations (here this is a "binary" simplification)
0 commentaires