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ENV510 Landscape Ecology and GIS
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A data layer has already been described as a set of logically related geographic features and their attributes. Features included in particular layers are chosen by the user. Usually organisation is based on grouping similar feature types. For example, data can be grouped thematically according to the type of geographic features that are represented.
More?
To understand the concept of multiple data layers see
http://www.informatics.org/france/cake.jpg
Partitioning the data involves
subdividing data into smaller units called tiles. This occurs when the
GIS has to handle large amounts of data.
More?
See http://www.geog.ubc.ca/courses/klink/gis.notes/ncgia/u66.html
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