Editing Graphs

The drawing panel which occupies most of the screen and displays graphs is called a GraphPanel. The GraphPanel maintains a simple undirected graph and a simple directed graph. Only one graph is displayed at any given time. In either graph users may add, move, select, unselect, and delete vertices in the GraphPanel with commonly used point, click, and drag methods. Selecting, unselecting, and deleting edges also work as expected, and adding edges is simply a matter of clicking on the two vertices to be connected.

Adding a vertex:

click on the screen at the location for the new vertex.

Selecting a vertex:

click on the vertex. (Selected vertices are highlighted.)

Unselecting a vertex:

click anywhere on the drawing space outside the graph.

Moving a vertex:

click on the vertex and move the cursor while holding the mouse button down.

Deleting a vertex:

move the vertex to the trash can, or select the vertex and then click on the trash can.

Adding an edge:

select the origin vertex, then click on the destination vertex.

Selecting an edge:

click on the edge. (Selected edges are highlighted.)

Unselecting an edge:

click anywhere on the drawing space not on the graph.

Moving an edge:

edges automatically follow their vertices and may not be moved directly.

Deleting an edge:

select the edge and then click on the trash can.

 
• Displaying & Editing Attributes of Vertices and Edges
• GraphControlPanel Buttons
• File Menu