Information about edges

Edges are used to connect the elements of the index card with each other to modell a stochastic experiment.

The edge mode is activated by clicking on the desired edge in the plug-in window. Thereby you differentiate between two different modes. You either choose the function „only one edge“(6) which means that the edge mode is automatically deactivated after drawing one or you choose an edge-type which stays activated until you deactivate it by clicking on the particular button in the plug-in window. An edge is drawn by dragging the mouse with a pressed left button from the start node to the end node. By choosing the function "delete edge" (4) you can delete an edge by dragging the mouse with a pressed left button between the nodes. The plug-in offers you four different types of edges.


  1. Draw without put back (1): This edge is only allowed to connect an urn and a drawing node. The number at the edge can be changed arbitrarily. It indicates, how many elements are drawn when you press „execute“ once. A “6” at the edge for example means, that 6 elements are drawn immediately when you press execute without putting the elements back into the urn. Because of this a drawn element can only occur once as a result. (Attention: similar elements can occur several times in the urn).
  2. Draw with put back (2): By choosing this edge an element is drawn and directly put back. This edge is only allowed to connect an urn and a drawing node!! Concerning a die or a coin it does not matter which drawing edge you choose, because the number of elements stays constant.
  3. Simple edge (3): This edge establishes a simple connection between two nodes (container, representation nodes, …).
  4. Delete edge (4): With the help of this function the desired edge is deleted by drawing between the involved edges.
  5. Separation edge (5): This edge allows it to split the elements of a drawing when used after the drawing node. The ordinal numbers at the edge selects the particular elements of each experiment. You can specify the elements listing up their ordinal numbers separated by “;”, you can define spans using “-“, or you can select “all”. This edge is also used after the combining node. For further information have a look in that help file.