地质找矿工作中往往需要对岩体、铁帽、矽卡岩、化探异常等进行分类,对它们作出含矿性评价。点群分析就是用来解决这类问题的一种多元统计方法。而且,点群分析的数学原理和统计方法都比较简单,因此应用比较广泛。但是,在计算中往往遇到一些共同的问题,例如,怎样选 Geological prospecting work often need to rock, iron hat, skarn, geochemical anomalies, such as classification, to make them contain ore evaluation. Point cloud analysis is a multivariate statistical method used to solve such problems. Moreover, the mathematical theory and statistical methods of point group analysis are relatively simple, so the application is more extensive. However, some common problems are often encountered in the calculation, for example, how to choose