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18.5. Analyzing Spatial Information

After populating spatial columns with values, you are ready to query and analyze them. MySQL provides a set of functions to perform various operations on spatial data. These functions can be grouped into four major categories according to the type of operation they perform:

  • Functions that convert geometries between various formats

  • Functions that provide access to qualitative or quantitative properties of a geometry

  • Functions that describe relations between two geometries

  • Functions that create new geometries from existing ones

Spatial analysis functions can be used in many contexts, such as:

  • Any interactive SQL program, such as mysql or MySQL Query Browser

  • Application programs written in any language that supports a MySQL client API


 
 
  Published under the terms of the GNU General Public License Design by Interspire