%%%%%模式識別鳶尾花實驗%%%%%%%%
%%%%%%201/03/16%%%%%%%%%%%%%
clear;
clc;
%%%%%%讀取數據%%%%%%%%
iris_data?=?load（‘實驗數據\iris.txt‘）;

%%%%%%數據分類%%%%%%%

iris_data_l1?=?iris_data（1:501:4）;?
iris_data_l2?=?iris_data（51:1001:4）;
iris_data_l3?=?iris_data（101:1501:4）;
%%%%%%劃分測試樣本和訓練樣本%%%%%%%%

train_num?=?25;
test_num?=?50-train_num;

l1_Train_select?=?randperm（50）;
l2_Train_select?=?randperm（50）;
l3_Train_select?=?randperm（50）;

iris_data_l1_train?=?iris_data_l1（l1_Train_select（1:train_num）:）;????????????

iris_data_l2_train?=?iris_data_l2（l2_Train_select（1:train_num）:）;??????????%%%訓練集

iris_data_l3_train?=?iris_data_l3（l3_Train_select（1:train_num）:）;


iris_data_l1_test?=?iris_data_l1（l1_Train_select（1:test_num）:）;

iris_data_l2_test?=?iris_data_l2（l2_Train_select（1:test_num）:）;???????????%%%測試集???

iris_data_l3_test?=?iris_data_l3（l3_Train_select（1:test_num）:）;

iris_data_test?=[iris_data_l1_test;iris_data_l2_test;iris_data_l3_test];




%%%%%%計算每一類中樣本分布概率%%%%%%%

?means_l1?=?mean（iris_data_l1_train）;
?means_l2?=?mean（iris_data_l2_train）;???????????????????????????????????????%%%樣本均值
?means_l3?=?mean（iris_data_l3_train）;
?
?covar_l1?=?cov（iris_data_l1_train）;?
?covar_l2?=?cov（iris_data_l2_train）;??????????????????