from the
toolbar. The SymmDiagram is a scatterplot, displaying differences in opposite flows in networks. To
create a SymmDiagram, select two noncontinuous variables (node variables of a
network normally) choose File->Create SymmDiagram, press CTRL-SHIFT-Y or
select from the
toolbar.
Per default, the Tukey SymmDiagram is opened. The x-coordinates are the sum of all flows from A to B and B to A. The y-coordinate is (flow(A to B)-flow(B to A))/2. The more the distance to the x-axis is, the more is the difference between the flows from A to B and the flows from B to A.
The Diagonal SymmDiagram is calculated the following way: The x-coordinate is sum of all flows from A to B, and the y-coordinate the sum of all flows from B to A. The more the distance from the diagonal is, the more is the difference between the flows from A to B and the flows from B to A.
