Step 4 : Defining gene classes.
Hierarchical clustering :
McQuitty method
seriation method :
Unidimensional scaling

This figure was obtained by manually specifying several gene classes.
Each of these classes was defined in two steps:

 

- First, the set of items to group was selected with the left mouse button. The rows in the table were selected directly, or by clicking the root of the subtree of elements to group.
- Then we used the grouping button to merge the designated elements.

This operation was repeated for each class.