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. 2019 Apr 23;91(10):6530–6540. doi: 10.1021/acs.analchem.8b05598

Figure 6.

Figure 6

Best accuracies for the discrimination between MS images with or without applied offset. The results show that the mean peaks intensities were significantly more sensitive to the applied offsets, allowing the PLS-DA models to predict them correctly. On the contrary, the PLS-DA models trained on the colocalization features performed almost identically, irrespective of the offset distribution, confirming that these features are more robust to systematic variations of the peak intensities.