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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gradient
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[geodesy, measurement]
A vector used to determine the maximum amount of vertical change on a surface and the direction in which that change occurs. Can also be expressed as the ratio, or percentage, between vertical distance (rise) and horizontal distance (run). A 10-percent gradient rises 10 feet for every 100 feet of horizontal distance.
[geodesy, mathematics]
The inclination of a surface in a given direction.
[physics]
The rate at which a quantity such as temperature or pressure changes in value.
[visualization techniques]
The interpolated transition of thematic color between fixed colors.