A to Z GIS | Explore this related guide, featuring updated terms and graphics and developed in coordination with Esri’s GIS Dictionary team.
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visual field effect
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[symbology]
An error of perception, scale, or design that occurs when a map symbol appears to be modified by nearby map content—for example, a black and white symbol that seems to disappear on a grayscale basemap, or a symbol that is hidden from a viewshed by nearby larger symbols.