How do visual variables, smart mapping tools, and rendering choices shape the meaning and usefulness of a GIS map?
Visual variables are the building blocks of GIS symbology.
They help us turn raw data into a map that tells a story.
Esri recognizes these common visual variables:
Bigger symbols = larger values
Smaller symbols = smaller values
Different colors represent different categories or groups.
Lighter or darker versions of the same color show intensity or quantity.
Different shapes help distinguish types of features (ex: schools vs parks).