Exploring Geographic Information Systems
Uses case studies to examine the various applications of each type of geographic information.
* Considers geographic information as a technical problem, an empowering application, a pure science endeavor, an academic pursuit and a social necessity.
* Provides a wide range of examples and applications to help readers understand technical discussions.
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BASIC BUILDING BLOCKS
Convergence of Many Technologies
Levels of Measurement
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altemative analysis applied assumptions attribute values boundaries buffer cartographic categorical coverage cell Chapter choropleth choropleth map classiﬁcation combination common complex concems construction contour contour lines coordinates cost created Dane County data model data quality data structure database deﬁned deﬁnition developed difﬁcult digitizing distance dominance rule evaluation example factors ﬁeld Figure ﬁlter ﬁnal ﬁrst ﬁt ﬂow forest geodetic geographic information geographic information system geometric graphic grid identiﬁer implementation inﬂuence information system integrated interactions interpolation involves isolines land levels of measurement linear matrix measurement framework method neighborhood operations neighbors node ordinal ordinal scale overlay parcel particular pixels points polygon procedure produce quadtree raster raster representation ratio reﬂect relationships result scale simple slope soil sources space spatial reference system speciﬁc surface survey tion topological transformations triangles units vector viewshed wetlands zones