File: predecessors.cat

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scilab 2.6-4
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predecessors        Scilab Group        Scilab function        predecessors
NAME
   predecessors - tail nodes of incoming arcs of a node
  
CALLING SEQUENCE
 a = predecessors(i,g)
PARAMETERS
 i  : integer 
    
 g  : graph list 
    
 a  : row vector of integers
    
DESCRIPTION
   predecessors returns the row vector of the numbers of the tail nodes of 
  the incoming arcs to node i for a directed graph g .
  
EXAMPLE
 ta=[1  6  2  4  7  5  6  8  4  3  5 1];
 he=[2  1  3  6  4  8  8  7  2  7  3 5];
 g=make_graph('foo',1,8,ta,he);
 g('node_x')=[285  284  335  160  405  189  118  45];
 g('node_y')=[266  179   83  176  368  252  64  309];
 show_graph(g);
 a=predecessors(8,g)
 show_nodes(a);
SEE ALSO
   neighbors, successors