Figure 4.

Snapshot of the GUI to create one of the three matrices. A matrix is created with the number of occurrences of masses in replicate spectra of different samples, a binary table with number of occurrences of masses above a specific threshold, and a matrix with the mean intensity of the present peaks in the mass spectra replicates. A small preview part of an example matrix with a total of 1949 peptide masses and 111 samples, with the number of occurrences of masses in replicate spectra of the samples is presented at the bottom of the GUI.

Titulaer et al. BMC Bioinformatics 2006 7:403   doi:10.1186/1471-2105-7-403
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