说明：  一个用来计算高维数据线性图形嵌入的matlab函数，是几乎所有线性降维算法（如LPP, NPE, IsoProjection, LSDA.）都要用的一个文件，在这里上传给大家，一定用得着！
(A high dimensional data used to calculate the linear graphics embedded matlab function, is that almost all linear dimensionality reduction algorithms (such as LPP, NPE, IsoProjection, LSDA.) Should be used in a document From here to the U.S., we use gained!)