With the emergence of many sophisticated instruments such as HPLC-DAD,GC-IR, GC-MS and the automatization of data collection and transmission, analystscan now obtain data matrixes consisting of hundreds and thousands data points easily.

• 随着大量新型分析仪器（如HPLC-DAD、GC-IR、GC-MS等）的相继问世以及仪器自动采集和传输成为易事，分析化学工作者面对的不再是几个或十几个数据，而是成千上万个数据点构成的二维化学数据阵或三维化学数据阵。