Figure 2

Combined analysis of sub-spectra. (a) Peaks detected in each sub-spectrum using the wavelet analysis. We obtain one set of peaks for each sub-spectrum, although in this cartoon we show only three, for simplicity. (b) Using the distribution of all peaks detected across all sub-spectra (P, solid line), we estimate a distribution of noise peaks (Q, dashed line). (c) Sets of peaks obtained in (a) are summed per m/z position and used as input for the significance test.