Nature (2 Nov 2006) has a letter on "Global distribution and conservation of rare and threatened vertebrates" (pp93-96). The approach is to compute pair-wise Pearson correlations for numbers of species between classes in each area.
These correlations are displayed in a bar chart (Fig 2, p94). My question to allstat is simply whether you have seen correlations displayed as bars elsewhere, rather than as a triangular matrix. Each bar is topped with 1, 2 or 3 asterisks. My interest is not in the underlying science, but in the communication of results.
Allan
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