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. 2020 Aug 13;11:1931. doi: 10.3389/fmicb.2020.01931

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Copyright © 2020 Giraud-Gatineau, Texier, Garnotel, Raoult and Chaudet.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Principal Component Analysis (PCA) of the top 35 bacterial species with the composition of the two species groups identified by k-means (mainCoreRelInt: proportion of ions captured by the core; mainClusFreqRan: frequency range between the most and least frequent main cluster peak; mainClusRelInt: proportion of ions captured by the main cluster; mainClusRelSize: relative size of the main cluster; clustersRelSize: relative size of clusters; mainCoreFreqRan: frequency range between the most and least frequent core peak; mainCoreRelSize: relative size of the core).