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git-svn-id: http://igraph.rubyforge.org/svn/trunk@51 71f48855-0bbf-4aa5-930d-4df415e86613

This commit is contained in:
alexgutteridge 2007-10-02 07:46:31 +00:00
parent e61bb75550
commit b5938365a6
5 changed files with 264 additions and 7 deletions
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19
ext/cIGraph.c
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@ -207,6 +207,14 @@ void Init_igraph(){
rb_define_const(cIGraph, "GET_ADJACENCY_LOWER", INT2NUM(1));
rb_define_const(cIGraph, "GET_ADJACENCY_BOTH", INT2NUM(2));
rb_define_const(cIGraph, "ERDOS_RENYI_GNP", INT2NUM(0));
rb_define_const(cIGraph, "ERDOS_RENYI_GNM", INT2NUM(1));
rb_define_singleton_method(cIGraph, "grg_game", cIGraph_grg_game, 3); /* in cIGraph_generators_random.c */
rb_define_singleton_method(cIGraph, "barabasi_game", cIGraph_barabasi_game, 4); /* in cIGraph_generators_random.c */
rb_define_singleton_method(cIGraph, "nonlinear_barabasi_game", cIGraph_nonlinear_barabasi_game, 6); /* in cIGraph_generators_random.c */
rb_define_singleton_method(cIGraph, "erdos_renyi_game", cIGraph_erdos_renyi_game, 5); /* in cIGraph_generators_random.c */
rb_define_method(cIGraph, "[]", cIGraph_get_edge_attr, 2); /* in cIGraph_attribute_handler.c */
rb_define_method(cIGraph, "[]=", cIGraph_set_edge_attr, 3); /* in cIGraph_attribute_handler.c */
rb_define_alias (cIGraph, "get_edge_attr", "[]");
@ -328,9 +336,14 @@ void Init_igraph(){
rb_define_method(cIGraph, "write_graph_graphml", cIGraph_write_graph_graphml, 1); /* in cIGraph_file.c */
rb_define_method(cIGraph, "write_graph_pajek", cIGraph_write_graph_pajek, 1); /* in cIGraph_file.c */
rb_define_method(cIGraph, "layout_random", cIGraph_layout_random, 0); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_circle", cIGraph_layout_circle, 0); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_fruchterman_reingold", cIGraph_layout_fruchterman_reingold, 6); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_random", cIGraph_layout_random, 0); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_circle", cIGraph_layout_circle, 0); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_fruchterman_reingold", cIGraph_layout_fruchterman_reingold, 6); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_kamada_kawai", cIGraph_layout_kamada_kawai, 5); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_reingold_tilford", cIGraph_layout_reingold_tilford, 1); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_reingold_tilford_circular", cIGraph_layout_reingold_tilford_circular, 1); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_grid_fruchterman_reingold", cIGraph_layout_grid_fruchterman_reingold, 7); /* in cIGraph_layout.c */
rb_define_method(cIGraph, "layout_lgl", cIGraph_layout_lgl, 7); /* in cIGraph_layout.c */
//Matrix class
cIGraphMatrix = rb_define_class("IGraphMatrix", rb_cObject);

40
ext/cIGraph.h
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@ -30,6 +30,15 @@ VALUE cIGraph_alloc(VALUE klass);
VALUE cIGraph_initialize(int argc, VALUE *argv, VALUE self);
VALUE cIGraph_init_copy(VALUE copy, VALUE orig);
//Random graph generators
VALUE cIGraph_grg_game (VALUE self, VALUE nodes,
VALUE radius, VALUE torus);
VALUE cIGraph_barabasi_game(VALUE self, VALUE nodes,
VALUE m, VALUE outpref, VALUE directed);
VALUE cIGraph_nonlinear_barabasi_game(VALUE self, VALUE nodes, VALUE power,
VALUE m, VALUE outpref, VALUE zeroappeal, VALUE directed);
VALUE cIGraph_erdos_renyi_game (VALUE self, VALUE type, VALUE nodes, VALUE mp, VALUE directed, VALUE loops);
//Attribute accessors
int replace_i(VALUE key, VALUE val, VALUE hash);
VALUE cIGraph_get_edge_attr(VALUE self, VALUE from, VALUE to);
@ -171,8 +180,8 @@ VALUE cIGraph_read_graph_pajek (VALUE self, VALUE file);
VALUE cIGraph_write_graph_pajek (VALUE self, VALUE file);
//Layouts
VALUE cIGraph_layout_random(VALUE self);
VALUE cIGraph_layout_circle(VALUE self);
VALUE cIGraph_layout_random (VALUE self);
VALUE cIGraph_layout_circle (VALUE self);
VALUE cIGraph_layout_fruchterman_reingold(VALUE self,
VALUE niter,
VALUE maxdelta,
@ -180,6 +189,33 @@ VALUE cIGraph_layout_fruchterman_reingold(VALUE self,
VALUE coolexp,
VALUE repulserad,
VALUE use_seed);
VALUE cIGraph_layout_kamada_kawai (VALUE self,
VALUE niter,
VALUE sigma,
VALUE initemp,
VALUE coolexp,
VALUE kkconst);
VALUE cIGraph_layout_reingold_tilford (VALUE self,
VALUE root);
VALUE cIGraph_layout_reingold_tilford_circular(VALUE self,
VALUE root);
VALUE cIGraph_layout_grid_fruchterman_reingold(VALUE self,
VALUE niter,
VALUE maxdelta,
VALUE area,
VALUE coolexp,
VALUE repulserad,
VALUE cellsize,
VALUE use_seed);
VALUE cIGraph_layout_lgl(VALUE self,
VALUE maxit,
VALUE maxdelta,
VALUE area,
VALUE coolexp,
VALUE repulserad,
VALUE cellsize,
VALUE proot);
//Attributes
int cIGraph_attribute_init(igraph_t *graph,

176
ext/cIGraph_layout.c
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@ -22,7 +22,7 @@ VALUE cIGraph_layout_random(VALUE self){
}
/* call-seq:
* graph.layout_random -> IGraphMatrix
* graph.layout_circle -> IGraphMatrix
*
* Returns a layout with nodes laid out around a circle.
*/
@ -41,7 +41,7 @@ VALUE cIGraph_layout_circle(VALUE self){
}
/* call-seq:
* graph.layout_random -> IGraphMatrix
* graph.layout_fruchterman_reingold -> IGraphMatrix
*
* Places the vertices on a plane according to the Fruchterman-Reingold
* algorithm.
@ -75,3 +75,175 @@ VALUE cIGraph_layout_fruchterman_reingold(VALUE self,
return Data_Wrap_Struct(cIGraphMatrix, 0, cIGraph_matrix_free, res);
}
/* call-seq:
* graph.layout_kamada_kawai -> IGraphMatrix
*
* Places the vertices on a plane according the Kamada-Kawai algorithm.
*
* This is a force directed layout, see Kamada, T. and Kawai, S.: An
* Algorithm for Drawing General Undirected Graphs. Information Processing
* Letters, 31/1, 7--15, 1989.
*/
VALUE cIGraph_layout_kamada_kawai(VALUE self,
VALUE niter,
VALUE sigma,
VALUE initemp,
VALUE coolexp,
VALUE kkconst){
igraph_t *graph;
igraph_matrix_t *res = malloc(sizeof(igraph_matrix_t));
Data_Get_Struct(self, igraph_t, graph);
igraph_matrix_init(res,0,0);
igraph_layout_kamada_kawai(graph,res,
NUM2INT(niter),
NUM2DBL(sigma),
NUM2DBL(initemp),
NUM2DBL(coolexp),
NUM2DBL(kkconst));
return Data_Wrap_Struct(cIGraphMatrix, 0, cIGraph_matrix_free, res);
}
/* call-seq:
* graph.layout_reingold_tilford -> IGraphMatrix
*
* Reingold-Tilford layout for tree graphs
*
* Arranges the nodes in a tree where the given node is used as the root.
* The tree is directed downwards and the parents are centered above its
* children. For the exact algorithm, see:
*
* Reingold, E and Tilford, J: Tidier drawing of trees. IEEE Trans. Softw.
* Eng., SE-7(2):223--228, 1981
*
* If the given graph is not a tree, a breadth-first search is executed
* first to obtain a possible spanning tree.
*/
VALUE cIGraph_layout_reingold_tilford(VALUE self,
VALUE root){
igraph_t *graph;
igraph_matrix_t *res = malloc(sizeof(igraph_matrix_t));
Data_Get_Struct(self, igraph_t, graph);
igraph_matrix_init(res,0,0);
igraph_layout_reingold_tilford(graph,res,
cIGraph_get_vertex_id(self, root));
return Data_Wrap_Struct(cIGraphMatrix, 0, cIGraph_matrix_free, res);
}
/* call-seq:
* graph.layout_reingold_tilford_circular -> IGraphMatrix
*
* Reingold-Tilford layout for tree graphs, drawn in a circular style
*
* Arranges the nodes in a tree where the given node is used as the root.
* The tree is directed downwards and the parents are centered above its
* children. For the exact algorithm, see:
*
* Reingold, E and Tilford, J: Tidier drawing of trees. IEEE Trans. Softw.
* Eng., SE-7(2):223--228, 1981
*
* If the given graph is not a tree, a breadth-first search is executed
* first to obtain a possible spanning tree.
*/
VALUE cIGraph_layout_reingold_tilford_circular(VALUE self,
VALUE root){
igraph_t *graph;
igraph_matrix_t *res = malloc(sizeof(igraph_matrix_t));
Data_Get_Struct(self, igraph_t, graph);
igraph_matrix_init(res,0,0);
igraph_layout_reingold_tilford_circular(graph,res,
cIGraph_get_vertex_id(self, root));
return Data_Wrap_Struct(cIGraphMatrix, 0, cIGraph_matrix_free, res);
}
/* call-seq:
* graph.layout_grid_fruchterman_reingold -> IGraphMatrix
*
* Places the vertices on a plane according to the Fruchterman-Reingold
* algorithm.
*
* This is a force-directed layout, see Fruchterman, T.M.J. and Reingold,
* E.M.: Graph Drawing by Force-directed Placement. Software -- Practice and
* Experience, 21/11, 1129--1164, 1991.
*/
VALUE cIGraph_layout_grid_fruchterman_reingold(VALUE self,
VALUE niter,
VALUE maxdelta,
VALUE area,
VALUE coolexp,
VALUE repulserad,
VALUE cellsize,
VALUE use_seed){
igraph_t *graph;
igraph_matrix_t *res = malloc(sizeof(igraph_matrix_t));
Data_Get_Struct(self, igraph_t, graph);
igraph_matrix_init(res,0,0);
igraph_layout_grid_fruchterman_reingold(graph,res,
NUM2INT(niter),
NUM2DBL(maxdelta),
NUM2DBL(area),
NUM2DBL(coolexp),
NUM2DBL(repulserad),
NUM2DBL(cellsize),
use_seed == Qtrue ? 1: 0);
return Data_Wrap_Struct(cIGraphMatrix, 0, cIGraph_matrix_free, res);
}
/* call-seq:
* graph.layout_lgl -> IGraphMatrix
*
* Places the vertices on a plane according to the Fruchterman-Reingold
* algorithm.
*
* This is a force-directed layout, see Fruchterman, T.M.J. and Reingold,
* E.M.: Graph Drawing by Force-directed Placement. Software -- Practice and
* Experience, 21/11, 1129--1164, 1991.
*/
VALUE cIGraph_layout_lgl(VALUE self,
VALUE maxit,
VALUE maxdelta,
VALUE area,
VALUE coolexp,
VALUE repulserad,
VALUE cellsize,
VALUE proot){
igraph_t *graph;
igraph_matrix_t *res = malloc(sizeof(igraph_matrix_t));
Data_Get_Struct(self, igraph_t, graph);
igraph_matrix_init(res,0,0);
igraph_layout_lgl(graph,res,
NUM2INT(maxit),
NUM2DBL(maxdelta),
NUM2DBL(area),
NUM2DBL(coolexp),
NUM2DBL(repulserad),
NUM2DBL(cellsize),
cIGraph_get_vertex_id(self, proot));
return Data_Wrap_Struct(cIGraphMatrix, 0, cIGraph_matrix_free, res);
}

35
test/tc_layout.rb
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@ -23,4 +23,39 @@ class TestGraph < Test::Unit::TestCase
assert_equal g.vcount, l.nrow
assert_equal 2, l.ncol
end
def test_kamada_kawai
g = IGraph.new([1,2,3,4],true)
l = g.layout_kamada_kawai(10,1,1,2,1)
assert_instance_of IGraphMatrix, l
assert_equal g.vcount, l.nrow
assert_equal 2, l.ncol
end
def test_reingold_tilford
g = IGraph.new([1,2,3,4],true)
l = g.layout_reingold_tilford(1)
assert_instance_of IGraphMatrix, l
assert_equal g.vcount, l.nrow
assert_equal 2, l.ncol
end
def test_reingold_tilford_circular
g = IGraph.new([1,2,3,4],true)
l = g.layout_reingold_tilford_circular(1)
assert_instance_of IGraphMatrix, l
assert_equal g.vcount, l.nrow
assert_equal 2, l.ncol
end
def test_grid_fruchterman_reingold
g = IGraph.new([1,2,3,4],true)
l = g.layout_grid_fruchterman_reingold(10,1,1,2,1,1,false)
assert_instance_of IGraphMatrix, l
assert_equal g.vcount, l.nrow
assert_equal 2, l.ncol
end
def test_lgl
g = IGraph.new([1,2,3,4],true)
l = g.layout_lgl(10,1,1,2,1,1,1)
assert_instance_of IGraphMatrix, l
assert_equal g.vcount, l.nrow
assert_equal 2, l.ncol
end
end

1
test/test_all.rb
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@ -16,6 +16,7 @@ require 'tc_dijkstra'
require 'tc_directedness'
require 'tc_error_handling'
require 'tc_file_read_write'
require 'tc_generators_random'
require 'tc_independent_vertex_sets'
require 'tc_isomorphic'
require 'tc_iterators'