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.

- 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).
- 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.
- Simple edge (3): This edge establishes a simple connection between two
nodes (container, representation nodes, …).
- Delete edge (4): With the help of this function the desired edge is deleted
by drawing between the involved edges.
- 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.