function?flowercloud
clear
%輸入三類花各自的四個特征參量（萼片長度、萼片寬度、花瓣長度、花瓣寬度）的樣本值，構成三個四維樣本矩陣：
%刺芒野古苣（Setosa）
x1（1:）=[5.14.94.74.65.05.44.65.04.44.95.44.84.84.35.85.75.45.15.75.15.45.14.65.14.85.05.05.25.24.74.85.45.25.54.95.05.54.94.45.15.04.54.45.05.14.85.14.65.35.0];?
x1（2:）=[3.53.03.23.13.63.93.43.42.93.13.73.43.03.04.04.43.93.53.83.83.43.73.63.33.43.03.43.53.43.23.13.44.14.23.13.23.53.13.03.43.52.33.23.53.83.03.83.23.73.3];?
x1（3:）=[1.41.41.31.51.41.71.41.51.41.51.51.61.41.11.21.51.31.41.71.51.71.51.01.71.91.61.61.51.41.61.61.51.51.41.51.21.31.51.31.51.31.31.31.61.91.41.61.41.51.4];?
x1（4:）=[0.20.20.20.20.20.40.30.20.20.10.20.20.10.10.20.40.40.30.30.30.20.40.20.50.20.20.40.20.20.20.20.40.10.20.10.20.20.10.20.20.30.30.20.60.40.30.20.20.20.2];?
%變色雞錦花（Versicolour）
x2（1:）=[7.06.46.95.56.55.76.34.96.65.25.05.96.06.15.66.75.65.86.25.65.96.16.36.16.46.66.86.76.05.75.55.55.86.05.46.06.76.35.65.55.55.55.86.05.46.06.76.35.65.5];?
x2（2:）=[3.23.23.12.32.82.82.32.42.92.72.03.02.22.92.93.13.02.72.22.53.22.82.52.82.93.02.83.02.92.62.42.42.72.73.03.43.12.33.02.52.63.02.62.32.73.02.92.92.52.8];?
x2（3:）=[4.74.54.94.04.64.54.73.34.63.93.54.24.04.73.64.44.54.14.53.94.84.04.94.74.34.44.85.04.53.53.83.73.95.14.54.54.74.44.14.04.44.64.03.34.24.24.24.33.04.1];?
x2（4:）=[1.41.51.51.31.51.31.61.01.31.41.01.51.01.41.31.41.51.01.51.11.81.31.51.21.31.41.41.71.51.01.11.01.21.61.51.61.51.31.31.31.21.41.21.01.31.21.31.31.11.3];??
%北美車前草（Virginica）
x3（1:）=[6.35.87.16.36.57.64.97.36.77.26.56.46.85.75.86.46.57.77.76.06.95.67.76.36.77.26.26.16.47.27.47.96.46.36.17.76.36.46.06.96.76.95.86.86.76.76.36.56.25.9];?
x3（2:）=[3.32.73.02.93.03.02.52.92.53.63.22.73.02.52.83.23.03.82.62.23.22.82.82.73.33.22.83.02.83.02.83.82.82.82.63.03.43.13.03.13.13.12.73.23.33.02.53.03.43.0];?
x3（3:）=[6.05.15.95.65.86.64.56.35.86.15.15.35.55.05.15.35.56.76.95.05.74.96.74.95.76.04.84.95.65.86.16.66.45.65.16.15.65.54.85.45.65.15.15.95.75.25.05.25.45.1];?
x3（4:）=[2.51.92.11.82.22.11.71.81.82.52.01.92.12.02.42.31.82.22.31.52.32.02.01.82.11.81.81.82.11.61.92.02.21.51.42.32.41.81.82.12.42.31.92.32.52.31.92.02.31.8];


%計算原始三類花樣本的四個特征參量的均值
%刺芒野古苣（Setosa）
ex1（1）=mean（x1（1:）‘）;
ex1（2）=mean（x1（2:）‘）;?
ex1（3）=mean（x1（3:）‘）;?
ex1（4）=mean（x1（4:）‘）;?
%變色雞錦花（Versicolour）
ex2（1）=mean（x2（1:）‘）;
ex2（2）=mean（x2（2:）‘）;?
ex2（3）=mean（x2（3:）‘）;?
ex2（4）=mean（x2（4:）‘）;?
%北美車前草（Virginica）
ex3（1）=mean（x3（1:）‘）;
e