Z-Value
The value representing elevation or another attribute at a specific (x, y) location. Z-values are fundamental for 3D spatial analysis, terrain modelling, and representing surfaces such as elevation or depth.
What is Z-Value?
The vertical position or elevation of a point in a three-dimensional coordinate system is known as its Z-value in GIS. The Z-value provides a third dimension by identifying the site's height or depth, usually expressed in meters or feet, while the X and Y coordinates represent the horizontal location (east-west and north-south). In order to represent terrain surfaces, create 3D models, and analyse elevation-related elements like mountains, valleys, and building heights, Z-values are essential. They are commonly used in applications that need an understanding of elevation fluctuations, such as environmental modelling, infrastructure development, flood risk assessment, and topographic mapping. By using Z-values, GIS users can see and study the Earth's surface in a more realistic and detailed manner, going beyond flat maps.
Related Keywords
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