中文说明： 对于初学matlab的同学会有帮助，可以广泛的应用于数据预测及数据分析,借鉴了主成分分析算法（PCA），已经调试成功.内含m文件，可直接运行，用于图像处理的独立分量分析，用平面波展开法计算二维声子晶体带隙。
English Description：
MATLAB for beginners will help students, can be widely used in data and data analysis, using principal components analysis (PCA), had successfully. contains m file can be run directly, and independent component analysis for image processing using plane-wave expansion method for calculation of band gap of two-dimensional phononic crystals.