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人们总是希望把地球化学找矿中所取得的多维数据表示在一张图上,以期从中找出规律和发现问题.因为图形表示具有明显直观的特点,所以它是帮助人们思维和判断的重要手段.特别在多元统计中,多维数据的图形表示法起着极重要的作用.过去常用平面图、剖面图和三角图示法来表示两两变量和最多三个变量的关系,而对大于三个变量的表示,却成为不可能.为此,多变量点图法是人们长期以来所探讨的一个研究课题.近十年来,国外相继研究出不少种多变量
It is always hoped that the multidimensional data obtained in geochemical prospecting will be represented on a map in order to find out the laws and discover problems, which are important for people’s thinking and judgment because of their obvious and intuitive features. Especially in multivariate statistics, the multidimensional data representation plays an important role in the past often used plan, section and triangle diagram to represent the relationship between two variables and up to three variables, and for more than three Therefore, the multivariate point map method is one of the research topics that people have been discussing for a long time.In recent ten years, many kinds of multivariate