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NAMETree::R - Perl extension for the R-tree data structure and algorithmsSYNOPSISuse Tree::R; my $rtree = Tree::R->new for my $object (@objects) { my @bbox = $object->bbox(); # (minx,miny,maxx,maxy) $rtree->insert($object,@bbox); } my @point = (123, 456); # (x,y) my @results; $rtree->query_point(@point,\@results); for my $object (@results) { # point is in object's bounding box } my @rect = (123, 456, 789, 1234); # (minx,miny,maxx,maxy) @results = (); $rtree->query_completely_within_rect(@rect,\@results); for my $object (@results) { # object is within rectangle } @results = (); $rtree->query_partly_within_rect(@rect,\@results); for my $object (@results) { # object's bounding box and rectangle overlap } DESCRIPTIONR-tree is a data structure for storing and indexing and efficiently looking up non-zero-size spatial objects.EXPORTNone by default.SEE ALSOA. Guttman: R-trees: a dynamic index structure for spatial indexing. ACM SIGMOD'84, Proc. of Annual Meeting (1984), 47--57.N. Beckmann, H.-P. Kriegel, R. Schneider & B. Seeger: The R*-tree: an efficient and robust access method for points and rectangles. Proc. of the 1990 ACM SIGMOD Internat. Conf. on Management of Data (1990), 322--331. The homepage of this module is on github: https://github.com/ajolma/Tree-R AUTHORAri JolmaCOPYRIGHT AND LICENSECopyright (C) 2005- by Ari JolmaThis library is free software; you can redistribute it and/or modify it under the terms of The Artistic License 2.0. REPOSITORY<https://github.com/ajolma/Tree-R>
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