Zero-elevation surface: Difference between revisions
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'''Zero-elevation surface''' is a [[vertical datum]] that is used to describe a surface, such as that of a [[planet]]. The value of this datum is usually adopted by statute. This elevation is used, for example, to build a texture map from an agreed surface, such as a [[spheroid]] with dimensions defined by a mean [[surface gravity]]. In the case of the [[Earth]], the zero-elevation surface is usually taken as [[sea level]]. |
'''Zero-elevation surface''' is a [[vertical datum]] that is used to describe a surface, such as that of a [[planet]]. The value of this datum is usually adopted by statute. This elevation is used, for example, to build a texture map from an agreed surface, such as a [[spheroid]] with dimensions defined by a mean [[surface gravity]]. In the case of the [[Earth]], the zero-elevation surface is usually taken as [[sea level]]. |
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Revision as of 01:34, 31 May 2020
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Zero-elevation surface is a vertical datum that is used to describe a surface, such as that of a planet. The value of this datum is usually adopted by statute. This elevation is used, for example, to build a texture map from an agreed surface, such as a spheroid with dimensions defined by a mean surface gravity. In the case of the Earth, the zero-elevation surface is usually taken as sea level.
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