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ENV510 Landscape Ecology and GIS
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up GIS | Using
GIS
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Representation
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| Scale | Metadata
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| Error | Management
Scale is a description
of the way data can be quantified (Lewis,
1995). Map scale is defined as 'the ratio of length on a map to length on
the ground' (Aspinall, 1995).
Scale was also defined by Forman
and Godron (1986) as ' the level of spatial resolution perceived or considered'.
Scale is therefore the unit of observation.
GIS has the ability to
combine data from maps of different source scales and can output data at any
scale. Therefore, caution is needed to avoid producing output at scales the
original source data was not intended to be viewed at.
Read
Reading 2.1 Goodchild, M.F. and Quattrochi, D.A. ' Scale, multiscaling, remote sensing and GIS. The importance of scale'
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