use polygon;Following are brief descriptions of the functions implemented.
- inWhichPolygons (database, lat, lon)
Returns a database pointer to the records where lat,lon falls in or dbINVALID if nothing is found,@db= inWhichPolygons(@db, lat, lon); if ($db[0]>0) { print "found some records\n"; }- readPolygon (database )
Returns all vertices from the specified record in a single array.@vertices= readPolygon( @db );- windrose( heading )
Returns the direction in textual form -> N, NNE, NE, ...$str= windrose( $azimuth );SEE ALSO
perldb(3p), polygon(3), polygon1.1(5)AUTHOR
Nikolaus Horn 2003 ZAMG / Vienna, nikolaus.horn@zamg.ac.atSUPPORT
Contributed code: NO BRTT support.
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Antelope User Group Contributed Software