con_nodes

Scilab function
Last update : September 1995

con_nodes - set of nodes of a connected component

### Calling Sequence

  `ns = con_nodes(i,g)`

### Parameters

- `i` : integer, number of the connected component
- `g` : graph list
- `ns` : row vector, node numbers of the connected component

### Description

`con_nodes` returns the row vector `ns` of the numbers of the nodes which belong to the connected component number `i` . If `i` is not the number of a connected component, the empty vector `[]` is returned.

### Examples

    ta=[1 1 2 2 2 3 4 4 5 7 7 9 10 12 12 13 13 14 15];
    he=[2 6 3 4 5 1 3 5 1 8 9 8 11 10 11 11 15 13 14];
    g=make_graph('foo',1,15,ta,he);
    g('node_x')=[197 191 106 194 296 305 305 418 422 432 552 550 549 416 548];
    g('node_y')=[76 181 276 278 276 83 174 281 177 86 175 90 290 397 399];
    show_graph(g);
    con_nodes(2,g)
    x_message('Displaying the nodes of component #2');
    n=g('node_number');
    nodecolor=0*ones(1,n);
    nodecolor(1,con_nodes(2,g))=11*ones(con_nodes(2,g));
    g('node_color')=nodecolor;
    nodediam=20.*ones(1,n);
    nodediam(1,con_nodes(2,g))=30*ones(con_nodes(2,g));
    g('node_diam')=nodediam;
    show_graph(g);

### See Also

`connex` , `is_connex` , `strong_connex` , `strong_con_nodes` ,