GIS CONCEPTS AND ARCGIS METHODS
David M. Theobald, Ph.D.
Warner College of Natural Resources
Colorado State University
the landscape? Third, data can be transformed into information that fits a user’s context
through a rich set of analytical tools. The relationship between different attributes can be
examined to investigate, for example, the spatial arrangement of aspen clones with
respect to soil type, aspect, or time since disturbance. Fourth, geographic data in a GIS do
not suffer, as they do in paper maps, from the fundamental trade-off between spatial
detail and geographic coverage (although because most geographic data are derived from
paper maps, they typically can only represent features to a certain resolution). This is
because the scale of a map can change depending on user needs, yet the underlying data
remains the same.
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