matlab函数及其功用

boxplot-produce a box plot of the data

biplot-creats  a biplot of the coefficients in the matrix coefs

        -allows you to visualize the magnitude and sign of each variable's contribution to the first two or three principle          components

pareto-pareto chart

         -this function labels each bar with its element index in Y and also plots a line displaying the cumulaive sum of Y

contour-contour plot of matrix

mesh-plot a contour graph under mesh graph