基于欧几里得距离的聚类分析，多元数据分析的主分量分析投影，是学习PCA特征提取的很好的学习资料，Matlab实现界面友好，本程序的性能已经超过其他算法，有详细的注释，匹配追踪和正交匹配追踪。- Clustering analysis based on Euclidean distance, Principal component analysis of multivariate data analysis projection, Is a good learning materials to learn PCA feature extraction, Matlab to achieve user-friendly, This program has exceeded the performance of other algorithms, There are detailed notes, Matching Pursuit and orthogonal matching pursuit.