R package：xcms(五)：Correspondence

代谢组学预处理的最后一步是匹配样品之间检测到的色谱峰的对应关系

pdp <- PeakDensityParam(sampleGroups = xdata$sample_group,
                        minFraction = 0.4, bw = 30)
xdata <- groupChromPeaks(xdata, param = pdp)

参考资料：
LCMS data preprocessing and analysis with xcms (bioconductor.org)