File: predecessors.man

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.TH predecessors 1 "September 1996" "Scilab Group" "Scilab function"
.so ../sci.an
.SH NAME
predecessors - tail nodes of incoming arcs of a node
.SH CALLING SEQUENCE
.nf
a = predecessors(i,g)
.fi
.SH PARAMETERS
.TP 2
i
: integer 
.TP 2
g
: graph list 
.TP 2
a
: row vector of integers
.SH DESCRIPTION
\fVpredecessors\fR returns the row vector of the numbers of the tail nodes of 
the incoming arcs to node \fVi\fR for a directed graph \fVg\fR .
.SH EXAMPLE
.nf
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);
.fi
.SH SEE ALSO
neighbors, successors