GIS Dictionary

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graphic component

[ESRI software] In MOLE, the most elementary part of a graphic. Icon, frame, and fill are examples of components that […]

graphic text

[ESRI software] Text added in ArcMap layout view that exists in page space and is stored in a map document.

graticule

1 [cartography] A network of longitude and latitude lines on a map or chart that relates points on a map

gravimeter

[geodesy] A device used to measure small variations in the earth’s gravitational field between two or more points.

gravimetric geodesy

[geodesy] The science of deducing the size and shape of the earth by measuring its gravitational field.

gravity model

1 [geography] A model that assumes that the influence of phenomena or populations on each other varies inversely with the

great circle

Any circle or near circle produced by the intersection of the surface of a sphere and a flat plane that

Greenwich mean time

[astronomy] The time at the prime meridian, which runs through the Royal Observatory in Greenwich, England. From 1884 to 1928,

Greenwich meridian

The meridian adopted by international agreement in 1884 as the prime meridian, the 0-degree meridian from which all other longitudes

grid

[cartography] In cartography, any network of parallel and perpendicular lines superimposed on a map and used for reference. These grids

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