Method for structural manipulation of graphs
These are the methods for simple manipulation of graphs: adding and deleting edges and vertices.
add.edges(graph, edges) add.vertices(graph, nv) delete.edges(graph, edges) delete.vertices(graph, v)
- The graph to work on.
- Numeric vector, the edges to add or remove.
- Numeric constant, the number of vertices to add.
- Numeric vector, the vertices to remove.
add.edges adds the specified edges to the graph. The ids of the
vertices are preserved.
add.vertices adds the specified number of isolate vertices to
the graph. The ids of the old vertices are preserved.
delete.edges removes the specified edges from the graph. If a
specified edge is not present, the function gives an error message,
and the original graph remains unchanged.
The ids of the vertices are preserved.
delete.vertices removes the specified vertices from the graph
together with their adjacent edges. The ids of the vertices are
- The new graph.
g <- graph.ring(10) add.edges(g, c(1,5,2,6) ) delete.edges(g, c(0,9, 1,2) ) delete.vertices(g, c(1,6,7) )