This constellation of researchers working in overlapping fields of knowledge, information, software and data visualization is a great jumping off spot. Visual-Literacy.org is a collective course spanning several institutions and involving a number of leaders in the field of visualisation. Sounds rather cool. As part of their prospectus they have constructed ‘maps’ of the visualisation constellation as geo-spatial map, periodic table, and a syllogism. This is a real practise/preach exercise and a wonderful overview of the wide range of activities in this field and their inter-relations. The periodic table is particularly impressive. Hover will popup a graphical representation of the technique noted. The syllogism makes a lot of sense. The periodic table must be complimented for the breadth of information conveyed and the attempt to systematize the volume. The table itself is a bit of a challenge to use and the metaphor of periodic table questionable, but a pointer in an interesting direction.
I note that Stephen Few, who writes and blogs on visualization has commented on the periodic table that is included in the above website. He is very critical of the way in which they have chosen to present the data in the form of the periodic table.