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PeakPicker

Executes the peak picking algorithm as described by Lange et al. (2006) Proc. PSB-06.

The conversion of the ''raw'' ion count data acquired by the machine into peak lists for further processing is usually called peak picking. Our algorithm is independent of the underlying machine or ionization method, and is able to resolve highly convoluted and asymmetric signals. The method uses the multiscale nature of spectrometric data by first detecting the mass peaks in the wavelet-transformed signal before a given asymmetric peak function is fitted to the raw data. In case of low-resoluted data, an optional step for the separation of overlapping peaks can be added. In an optional third stage, the resulting fit can be further improved using techniques from nonlinear optimization.

How to find Finding the right parameters for the NoiseFilter, the BaselineFilter and the PeakPicker is explained in the TOPP tutorial.


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