FIGURE 5. Cross-correlation coefficients between the 3-yr oscillatory mode of DHF incidence in Bangkok and the same mode of DHF incidence in the 71 other provinces of Thailand.
From the following article:
Travelling waves in the occurrence of dengue haemorrhagic fever in Thailand
Derek A.T. Cummings, Rafael A. Irizarry, Norden E. Huang, Timothy P. Endy, Ananda Nisalak, Kumnuan Ungchusak & Donald S. Burke
Nature 427, 344-347(22 January 2004)
doi:10.1038/nature02225
Pearson correlation coefficients are depicted as colours for each monthly pairing, with red indicating strong positive correlation, and blue indicating strong negative correlation (see colour bar on right). CCFs are ordered by rank of distance from Bangkok.
