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List:       postgis-users
Subject:    [postgis-users] functions to do spatial analysis' and test
From:       "Saurabh Data" <saurabhdata () hotmail ! com>
Date:       2004-03-30 23:08:41
Message-ID: BAY1-F72SpwoHhXamxB0001ae48 () hotmail ! com
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Dear USers

OpenGIS "Simple Features Specification for SQL"  list various object data 
types (like point, multipoint, curve, linestring, multicurve, 
multilinestring, surface, polygon, multisurface, multipolygon) to represent 
spatial objects.
It also lists the functions that support spatial analysis (like distance, 
buffer, convexhull, intersection, union , difference, symdifference) and 
functions that test ‘spatial relationship between spatial objects’ (like 
contains, disjoint, intersects, touches, crosses, within, contains, 
overlaps, relate).

I am sure that postGIS supports various functions on data types but does 
PostGIS has
functions to do spatial analysis' and test relationship btw spatial objects.

Also, if anyone knows if mySQL supports it ?

I am trying to compare the functionalities of postGIS and mySQL.

Any help will be much appreciated.

Many Thanks

Saurabh Data

___________________________________________________________________

Saurabh Data
School of Computing
University of Leeds
Leeds LS2 9JT
U.K.

one who seeketh , will findeth and all door shall open - james Allen
___________________________________________________________________

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