Half Matrix

Where only half a matrix is shown, usually used for similarities, or where two items are being compared against one another (i.e. the D' table). Only half the matrix is needed because it is the same when reflected across its diagonal

• Les Misérables Co-occurrence Matrix

• matrix+scatter plot

• Another version of that last example

What its good for

• Comparing multiple sets of two items against one another.
• Matrix graph without the redundancy...?
• Visualizing frequency between two matching sets