The Go-Matrix Chart is effectively an x-y matrix, where each node or cell is labelled by one of two mapping fields.

A mini-histogram or pie chart is drawn in each node based on the records that map to it.

The figure shows the a simple Go-Matrix Chart where Day of the Week is shown across the top or X direction and Time of the Day is shown at the left or Y.

This is also an 'Active' chart which can be clicked to find out the records linked to each element.

See Go-Matrix Chart in the Help for more details.