运行SVM模型出错Error using svmtrain. Y must be a vector or a character array.

在运行libsvm中的小例子时，出现下面的问题，求解决
>> load heart_scale
>> train=heart_scale_inst;
>> train_label=heart_scale_label;
>> test=train;
>> test_label=train_label;
>> model=svmtrain(train_label,train,'-c 2 -g 0.01');
Error using svmtrain (line 233)
Y must be a vector or a character array.

解决方法： 1.点击Matlab左上角的file，选择set path 2.在弹出的选项框中，选择第二个选项And with Subfolders 3.找到你的libsvm文件夹,点确定 4.点击save，关闭set path OK 转载至：http://blog.sina.com.cn/u/2866301622