add a vertex or set of vertices to a graph
addvertex(v1, v2, G)
addvertex(v1, weights=w, G)
addvertex([v1, v2], weights=[w1, w2], G)
graph or network
v1, v2, ..., vn
new vertices for the graph G
user supplied weight for a vertex (default 0)
Important: The networks package has been deprecated. Use the superseding command GraphTheory[AddVertex] instead.
This routine adds one or more vertices to a graph. The vertex names used are returned as an expression sequence.
To force addvertex() to use a specific weight for a single vertex use the optional argument (eg. weights=3).
If more than one vertex is to be added, they can be presented as a list or set of vertices. In this case, non-default weights must also be specified as a list of weights as in: addvertex([1, 3], weights=[0, 0], G)
A vertex cannot be a symbol or string beginning with the letter e; these are reserved, by the package, for edge names.
This routine is normally loaded via the command with(networks) but can also be referenced using the full name networks[addvertex](...).
Download Help Document
What kind of issue would you like to report? (Optional)
Thank you for submitting feedback on this help document. Your feedback will be used
to improve Maple's help in the future.