GIS Dictionary

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lattice

A representation of a surface using an array of regularly spaced sample points (mesh points) that are referenced to a […]

layer

1 [data structures] The visual representation of a geographic dataset in any digital map environment. Conceptually, a layer is a

layer file

[data structures] In ArcGIS, a file with a .lyr extension that stores the path to a source dataset and other

layer package

[Internet] A special file (layer_name.lpk) that contains a layer, a copy of the data, and an XML file that has

layout

1 [map design] The arrangement of elements on a map, possibly including a title, legend, north arrow, scale bar, and

layout view

[ESRI software] In ArcMap and ArcReader, a view that shows the virtual page upon which geographic data and map elements,

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