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. Author manuscript; available in PMC: 2009 Mar 30.
Published in final edited form as: Int J Mass Spectrom. 2007 Jan 1;259(1-3):105–116. doi: 10.1016/j.ijms.2006.08.004

Fig. 2.

Fig. 2

Scatter plot matrix generated in S-PLUS 6.0 (www.insightful.com) showing correlation coefficients for the four methods. The scatter plots were generated from 528 data points for the PG_PP/PG_PPC expression ratios. See Table 1 and the Introduction for definitions of the variables.