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Pro Spatial with SQL Server 2012 by Alastair Aitchison

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C H A P T E R  10

Modification and Simplification

In this chapter, we'll examine the methods that can be used to create new geometries by modifying existing instances of geography or geometry data. Such modifications include enlarging or shrinking a geometry (STBuffer()), inverting it (ReorientObject()), straightening its curved edges (STCurveToLine()), or simplifying it (Reduce()).

Each of the methods discussed in this chapter acts upon only a single instance. Some methods, such as STConvexHull() and ReorientObject(), require no parameters. Others require one or more parameters, such as STBuffer() and Reduce(). As is the case with all the spatial functionality in SQL Server, the geometry and geography datatypes do not necessarily have the ...

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